Build sqlitelua for scalar, aggregate & table-valued UDFs in Lua (#118)

* Update base Docker images

* Use performance.now() instead of Date.now() for time promise tests

* Build sqlitelua: user scalar, aggregate & table-valued functions in Lua

Dockerfile.test

@@ -3,7 +3,7 @@
 #     docker build -t sqliteviz/test -f Dockerfile.test .
 #
 
-FROM node:12
+FROM node:12.22-buster
 
 RUN set -ex; \
     apt update; \

lib/sql-js/README.md

@@ -45,6 +45,8 @@ SQLite 3rd party extensions included:
 1. [pivot_vtab][5] -- a pivot virtual table
 2. `pearson` correlation coefficient function extension from [sqlean][21]
    (which is part of [squib][20])
+3. [sqlitelua][22] -- a virtual table `luafunctions` which allows to define custom scalar,
+   aggregate and table-valued functions in Lua
 
 To ease the step to have working clone locally, the build is committed into
 the repository.
@@ -103,3 +105,4 @@ described in [this message from SQLite Forum][12]:
 [19]: https://github.com/lana-k/sqliteviz/blob/master/tests/lib/database/sqliteExtensions.spec.js
 [20]: https://github.com/mrwilson/squib/blob/master/pearson.c
 [21]: https://github.com/nalgeon/sqlean/blob/incubator/src/pearson.c
+[22]: https://github.com/kev82/sqlitelua

lib/sql-js/benchmark/Dockerfile

@@ -1,10 +1,8 @@
-FROM node:14-bullseye
+FROM node:20.14-bookworm
 
 RUN set -ex; \
-    echo 'deb http://deb.debian.org/debian unstable main' \
-        > /etc/apt/sources.list.d/unstable.list; \
     apt-get update; \
-    apt-get install -y -t unstable firefox; \
+    apt-get install -y firefox-esr; \
     apt-get install -y chromium
 
 WORKDIR /tmp/build

lib/sql-js/benchmark/result-analysis.ipynb

@@ -69,6 +69,19 @@
       ],
       "metadata": {}
     },
+    {
+      "cell_type": "code",
+      "source": [
+        "!du -b lib | head -n 2"
+      ],
+      "outputs": [],
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false,
+        "outputHidden": false,
+        "inputHidden": true
+      }
+    },
     {
       "cell_type": "code",
       "source": [
@@ -176,7 +189,7 @@
     },
     "language_info": {
       "name": "python",
-      "version": "3.10.7",
+      "version": "3.10.14",
       "mimetype": "text/x-python",
       "codemirror_mode": {
         "name": "ipython",

lib/sql-js/build.py

@@ -24,6 +24,7 @@ cflags = (
     # Compile-time optimisation
     '-Os',  # reduces the code size about in half comparing to -O2
     '-flto',
+    '-Isrc', '-Isrc/lua',
 )
 emflags = (
     # Base
@@ -61,6 +62,15 @@ def build(src: Path, dst: Path):
         '-c', src / 'extension-functions.c',
         '-o', out / 'extension-functions.o',
     ])
+    logging.info('Building LLVM bitcode for SQLite Lua extension')
+    subprocess.check_call([
+        'emcc',
+        *cflags,
+        '-shared',
+        *(src / 'lua').glob('*.c'),
+        *(src / 'sqlitelua').glob('*.c'),
+        '-o', out / 'sqlitelua.o',
+    ])
 
     logging.info('Building WASM from bitcode')
     subprocess.check_call([
@@ -68,6 +78,7 @@ def build(src: Path, dst: Path):
         *emflags,
         out / 'sqlite3.o',
         out / 'extension-functions.o',
+        out / 'sqlitelua.o',
         '-o', out / 'sql-wasm.js',
     ])
 

lib/sql-js/configure.py

@@ -1,7 +1,9 @@
 import logging
+import re
 import shutil
 import subprocess
 import sys
+import tarfile
 import zipfile
 from io import BytesIO
 from pathlib import Path
@@ -30,8 +32,14 @@ extension_urls = (
     # =====================
     ('https://github.com/jakethaw/pivot_vtab/raw/9323ef93/pivot_vtab.c', 'sqlite3_pivotvtab_init'),
     ('https://github.com/nalgeon/sqlean/raw/95e8d21a/src/pearson.c', 'sqlite3_pearson_init'),
+    # Third-party extension with own dependencies
+    # ===========================================
+    ('https://github.com/kev82/sqlitelua/raw/db479510/src/main.c', 'sqlite3_luafunctions_init'),
 )
 
+lua_url = 'http://www.lua.org/ftp/lua-5.3.5.tar.gz'
+sqlitelua_url = 'https://github.com/kev82/sqlitelua/archive/db479510.zip'
+
 sqljs_url = 'https://github.com/sql-js/sql.js/archive/refs/tags/v1.7.0.zip'
 
 
@@ -59,6 +67,38 @@ def _get_amalgamation(tgt: Path):
             shutil.copyfileobj(fr, fw)
 
 
+def _get_lua(tgt: Path):
+    # Library definitions from lua/Makefile
+    lib_str = '''
+        CORE_O=    lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
+            lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \
+            ltm.o lundump.o lvm.o lzio.o
+        LIB_O=    lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \
+            lmathlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o loadlib.o linit.o
+        LUA_O=    lua.o
+    '''
+    header_only_files = {'lprefix', 'luaconf', 'llimits', 'lualib'}
+    lib_names = set(re.findall(r'(\w+)\.o', lib_str)) | header_only_files
+
+    logging.info('Downloading and extracting Lua %s', lua_url)
+    archive = tarfile.open(fileobj=BytesIO(request.urlopen(lua_url).read()))
+    (tgt / 'lua').mkdir()
+    for tarinfo in archive:
+        tarpath = Path(tarinfo.name)
+        if tarpath.match('src/*') and tarpath.stem in lib_names:
+            with (tgt / 'lua' / tarpath.name).open('wb') as fw:
+                shutil.copyfileobj(archive.extractfile(tarinfo), fw)
+
+    logging.info('Downloading and extracting SQLite Lua extension %s', sqlitelua_url)
+    archive = zipfile.ZipFile(BytesIO(request.urlopen(sqlitelua_url).read()))
+    archive_root_dir = zipfile.Path(archive, archive.namelist()[0])
+    (tgt / 'sqlitelua').mkdir()
+    for zpath in (archive_root_dir / 'src').iterdir():
+        if zpath.name != 'main.c':
+            with zpath.open() as fr, (tgt / 'sqlitelua' / zpath.name).open('wb') as fw:
+                shutil.copyfileobj(fr, fw)
+
+
 def _get_contrib_functions(tgt: Path):
     request.urlretrieve(contrib_functions_url, tgt / 'extension-functions.c')
 
@@ -70,6 +110,7 @@ def _get_extensions(tgt: Path):
         for url, init_fn in extension_urls:
             logging.info('Downloading and appending to amalgamation %s', url)
             with request.urlopen(url) as resp:
+                f.write(b'\n')
                 shutil.copyfileobj(resp, f)
             init_functions.append(init_fn)
 
@@ -90,6 +131,7 @@ def _get_sqljs(tgt: Path):
 def configure(tgt: Path):
     _get_amalgamation(tgt)
     _get_contrib_functions(tgt)
+    _get_lua(tgt)
     _get_extensions(tgt)
     _get_sqljs(tgt)
 

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "sqliteviz",
-  "version": "0.23.0",
+  "version": "0.23.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "sqliteviz",
-      "version": "0.23.0",
+      "version": "0.23.1",
       "license": "Apache-2.0",
       "dependencies": {
         "codemirror": "^5.57.0",
@@ -15,7 +15,7 @@
         "html2canvas": "^1.1.4",
         "jquery": "^3.6.0",
         "nanoid": "^3.1.12",
-        "papaparse": "^5.3.1",
+        "papaparse": "^5.4.1",
         "pivottable": "^2.23.0",
         "plotly.js": "^1.58.4",
         "promise-worker": "^2.0.1",
@@ -16381,9 +16381,9 @@
       "dev": true
     },
     "node_modules/papaparse": {
-      "version": "5.3.2",
-      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.3.2.tgz",
-      "integrity": "sha512-6dNZu0Ki+gyV0eBsFKJhYr+MdQYAzFUGlBMNj3GNrmHxmz1lfRa24CjFObPXtjcetlOv5Ad299MhIK0znp3afw=="
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.4.1.tgz",
+      "integrity": "sha512-HipMsgJkZu8br23pW15uvo6sib6wne/4woLZPlFf3rpDyMe9ywEXUsuD7+6K9PRkJlVT51j/sCOYDKGGS3ZJrw=="
     },
     "node_modules/parallel-transform": {
       "version": "1.2.0",
@@ -38855,9 +38855,9 @@
       "dev": true
     },
     "papaparse": {
-      "version": "5.3.2",
-      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.3.2.tgz",
-      "integrity": "sha512-6dNZu0Ki+gyV0eBsFKJhYr+MdQYAzFUGlBMNj3GNrmHxmz1lfRa24CjFObPXtjcetlOv5Ad299MhIK0znp3afw=="
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.4.1.tgz",
+      "integrity": "sha512-HipMsgJkZu8br23pW15uvo6sib6wne/4woLZPlFf3rpDyMe9ywEXUsuD7+6K9PRkJlVT51j/sCOYDKGGS3ZJrw=="
     },
     "parallel-transform": {
       "version": "1.2.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sqliteviz",
-  "version": "0.23.0",
+  "version": "0.24.1",
   "license": "Apache-2.0",
   "private": true,
   "scripts": {
@@ -16,7 +16,7 @@
     "html2canvas": "^1.1.4",
     "jquery": "^3.6.0",
     "nanoid": "^3.1.12",
-    "papaparse": "^5.3.1",
+    "papaparse": "^5.4.1",
     "pivottable": "^2.23.0",
     "plotly.js": "^1.58.4",
     "promise-worker": "^2.0.1",

src/assets/styles/tables.css

@@ -107,3 +107,9 @@ table.sqliteviz-table {
   font-size: 11px;
   color: var(--color-text-base);
 }
+
+.sqliteviz-table tbody td[data-isNull="true"],
+.sqliteviz-table tbody td[data-isBlob="true"] {
+  color: var(--color-text-light-2);
+  font-style: italic;
+}

src/components/IconButton.vue

@@ -1,6 +1,7 @@
 <template>
-  <div
-    :class="['icon-btn', { active }, { disabled }]"
+  <button
+    :class="['icon-btn', { active }]"
+    :disabled="disabled"
     @click="onClick"
     @mouseenter="showTooltip($event, tooltipPosition)"
     @mouseleave="hideTooltip"
@@ -12,7 +13,7 @@
     <span v-if="tooltip" class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
       {{ tooltip }}
     </span>
-  </div>
+  </button>
 </template>
 
 <script>
@@ -38,11 +39,12 @@ export default {
   box-sizing: border-box;
   width: 26px;
   height: 26px;
-  cursor: pointer;
   display: flex;
   align-items: center;
   justify-content: center;
   position: relative;
+  background-color: transparent;
+  border: none;
 }
 .icon-btn:hover {
   border: 1px solid var(--color-border);
@@ -56,12 +58,12 @@ export default {
   fill: var(--color-accent);
 }
 
-.disabled.icon-btn  .icon >>> path,
-.disabled.icon-btn  .icon >>> circle {
+.icon-btn:disabled  .icon >>> path,
+.icon-btn:disabled  .icon >>> circle {
   fill: var(--color-border);
 }
 
-.disabled.icon-btn {
+.icon-btn:disabled {
   cursor: default;
   pointer-events: none;
 }

src/components/SqlTable/index.vue

@@ -18,7 +18,12 @@
         ref="table-container"
         @scroll="onScrollTable"
       >
-      <table ref="table" class="sqliteviz-table">
+      <table
+        ref="table"
+        class="sqliteviz-table"
+        tabindex="0"
+        @keydown="onTableKeydown"
+      >
         <thead>
           <tr>
             <th v-for="(th, index) in columns" :key="index" ref="th">
@@ -28,9 +33,18 @@
         </thead>
         <tbody>
           <tr v-for="rowIndex in currentPageData.count" :key="rowIndex">
-            <td v-for="(col, colIndex) in columns" :key="colIndex">
+            <td
+              v-for="(col, colIndex) in columns"
+              :data-col="colIndex"
+              :data-row="pageSize * (currentPage - 1) + rowIndex - 1"
+              :data-isNull="isNull(getCellValue(col, rowIndex))"
+              :data-isBlob="isBlob(getCellValue(col, rowIndex))"
+              :key="colIndex"
+              :aria-selected="false"
+              @click="onCellClick"
+            >
               <div class="cell-data" :style="cellStyle">
-                {{ dataSet.values[col][rowIndex - 1 + currentPageData.start] }}
+                {{ getCellText(col, rowIndex) }}
               </div>
             </td>
           </tr>
@@ -44,7 +58,11 @@
         <span v-if="preview">for preview</span>
         <span v-if="time">in {{ time }}</span>
       </div>
-      <pager v-show="pageCount > 1" :page-count="pageCount" v-model="currentPage" />
+      <pager
+        v-show="pageCount > 1"
+        :page-count="pageCount"
+        v-model="currentPage"
+      />
     </div>
   </div>
 </template>
@@ -62,14 +80,20 @@ export default {
       type: Number,
       default: 20
     },
-    preview: Boolean
+    page: {
+      type: Number,
+      default: 1
+    },
+    preview: Boolean,
+    selectedCellCoordinates: Object
   },
   data () {
     return {
       header: null,
       tableWidth: null,
-      currentPage: 1,
-      resizeObserver: null
+      currentPage: this.page,
+      resizeObserver: null,
+      selectedCellElement: null
     }
   },
   computed: {
@@ -99,7 +123,40 @@ export default {
       }
     }
   },
+  mounted () {
+    this.resizeObserver = new ResizeObserver(this.calculateHeadersWidth)
+    this.resizeObserver.observe(this.$refs.table)
+    this.calculateHeadersWidth()
+
+    if (this.selectedCellCoordinates) {
+      const { row, col } = this.selectedCellCoordinates
+      const cell = this.$refs.table
+        .querySelector(`td[data-col="${col}"][data-row="${row}"]`)
+      if (cell) {
+        this.selectCell(cell)
+      }
+    }
+  },
   methods: {
+    isBlob (value) {
+      return value && ArrayBuffer.isView(value)
+    },
+    isNull (value) {
+      return value === null
+    },
+    getCellValue (col, rowIndex) {
+      return this.dataSet.values[col][rowIndex - 1 + this.currentPageData.start]
+    },
+    getCellText (col, rowIndex) {
+      const value = this.getCellValue(col, rowIndex)
+      if (this.isNull(value)) {
+        return 'NULL'
+      }
+      if (this.isBlob(value)) {
+        return 'BLOB'
+      }
+      return value
+    },
     calculateHeadersWidth () {
       this.tableWidth = this.$refs['table-container'].offsetWidth
       this.$nextTick(() => {
@@ -110,18 +167,95 @@ export default {
     },
     onScrollTable () {
       this.$refs['header-container'].scrollLeft = this.$refs['table-container'].scrollLeft
+    },
+    onTableKeydown (e) {
+      const keyCodeMap = {
+        37: 'left',
+        39: 'right',
+        38: 'up',
+        40: 'down'
+      }
+
+      if (
+        !this.selectedCellElement ||
+        !Object.keys(keyCodeMap).includes(e.keyCode.toString())
+      ) {
+        return
+      }
+      e.preventDefault()
+
+      this.moveFocusInTable(this.selectedCellElement, keyCodeMap[e.keyCode])
+    },
+    onCellClick (e) {
+      this.selectCell(e.target.closest('td'), false)
+    },
+    selectCell (cell, scrollTo = true) {
+      if (!cell) {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        this.selectedCellElement = cell
+      } else if (!cell.ariaSelected || cell.ariaSelected === 'false') {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        cell.ariaSelected = 'true'
+        this.selectedCellElement = cell
+      } else {
+        cell.ariaSelected = 'false'
+        this.selectedCellElement = null
+      }
+
+      if (this.selectedCellElement && scrollTo) {
+        this.selectedCellElement.scrollIntoView()
+      }
+
+      this.$emit('updateSelectedCell', this.selectedCellElement)
+    },
+    moveFocusInTable (initialCell, direction) {
+      const currentRowIndex = +initialCell.dataset.row
+      const currentColIndex = +initialCell.dataset.col
+      let newRowIndex, newColIndex
+
+      if (direction === 'right') {
+        if (currentColIndex === this.columns.length - 1) {
+          newRowIndex = currentRowIndex + 1
+          newColIndex = 0
+        } else {
+          newRowIndex = currentRowIndex
+          newColIndex = currentColIndex + 1
+        }
+      } else if (direction === 'left') {
+        if (currentColIndex === 0) {
+          newRowIndex = currentRowIndex - 1
+          newColIndex = this.columns.length - 1
+        } else {
+          newRowIndex = currentRowIndex
+          newColIndex = currentColIndex - 1
+        }
+      } else if (direction === 'up') {
+        newRowIndex = currentRowIndex - 1
+        newColIndex = currentColIndex
+      } else if (direction === 'down') {
+        newRowIndex = currentRowIndex + 1
+        newColIndex = currentColIndex
+      }
+
+      const newCell = this.$refs.table
+        .querySelector(`td[data-col="${newColIndex}"][data-row="${newRowIndex}"]`)
+      if (newCell) {
+        this.selectCell(newCell)
+      }
     }
   },
-  mounted () {
-    this.resizeObserver = new ResizeObserver(this.calculateHeadersWidth)
-    this.resizeObserver.observe(this.$refs.table)
-    this.calculateHeadersWidth()
-  },
   beforeDestroy () {
     this.resizeObserver.unobserve(this.$refs.table)
   },
   watch: {
-    currentPageData: 'calculateHeadersWidth',
+    currentPageData () {
+      this.calculateHeadersWidth()
+      this.selectCell(null)
+    },
     dataSet () {
       this.currentPage = 1
     }
@@ -130,4 +264,13 @@ export default {
 </script>
 
 <style scoped>
+table.sqliteviz-table:focus {
+  outline: none;
+}
+.sqliteviz-table tbody td:hover {
+  background-color: var(--color-bg-light-3);
+}
+.sqliteviz-table tbody td[aria-selected="true"] {
+  box-shadow:inset 0 0 0 1px var(--color-accent);
+}
 </style>

src/components/svg/arrow.vue

@@ -0,0 +1,20 @@
+<template>
+  <svg
+    width="28"
+    height="27"
+    viewBox="0 0 28 27"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M17.9475 8.33625L12.7838 13.5L17.9475 18.6638L16.35 20.25L9.60001
+      13.5L16.35 6.75L17.9475 8.33625Z"
+      fill="#506784"
+    />
+</svg>
+</template>
+
+<script>
+export default {
+}
+</script>

src/components/svg/edgeArrow.vue

@@ -0,0 +1,26 @@
+<template>
+  <svg
+    width="27"
+    height="27"
+    viewBox="0 0 27 27"
+    fill="none"
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <path
+      d="M17.3474 8.33625L12.1837 13.5L17.3474 18.6638L15.7499 20.25L8.99991
+      13.5L15.7499 6.75L17.3474 8.33625Z"
+      fill="#506784"
+    />
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M7.19995 19.8L7.19995 7.20001H9.19995V19.8H7.19995Z"
+      fill="#506784"
+    />
+  </svg>
+</template>
+
+<script>
+export default {
+}
+</script>

src/components/svg/row.vue

@@ -0,0 +1,53 @@
+<template>
+  <svg
+    width="19"
+    height="19"
+    viewBox="0 0 19 19"
+    fill="none"
+  >
+    <g clip-path="url(#clip0_2130_5292)">
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M1.85303 11.3794L1.85303 7.80371L5.86304 7.80371L5.86304
+      11.3794L1.85303 11.3794ZM7.36304 11.3794L7.36304 7.80371L11.3428
+      7.80371L11.3428 11.3794L7.36304 11.3794ZM12.8428 11.3794L16.853
+      11.3794L16.853 7.80371L12.8428 7.80371L12.8428 11.3794ZM15.353
+      6.30371L16.853 6.30371C17.6815 6.30371 18.353 6.97528 18.353
+      7.80371L18.353 11.3794C18.353 12.2078 17.6815 12.8794 16.853
+      12.8794L15.353 12.8794L15.353 14.3111C15.353 15.0153 14.7603 15.5916
+      14.0358 15.5916L4.67027 15.5916C3.94579 15.5916 3.35303 15.0153 3.35303
+      14.3111L3.35303 12.8794L1.85303 12.8794C1.0246 12.8794 0.353027 12.2078
+      0.353027 11.3794L0.353027 7.80371C0.353027 6.97528 1.0246 6.30371
+      1.85303 6.30371L3.35303 6.30371L3.35303 4.87201C3.35303 4.16349 3.94139
+      3.59155 4.67027 3.59155L14.0358 3.59155C14.7604 3.59155 15.353 4.16117
+      15.353 4.87201L15.353 6.30371ZM14.0315 6.30371L14.0315 4.87086L11.887
+      4.87086L11.887 6.30371L12.8428 6.30371L14.0315 6.30371ZM10.387
+      6.30371L10.387 4.87086L8.26685 4.87086L8.26685 6.30371L10.387
+      6.30371ZM6.76685 6.30371L6.76685 4.87086L4.67027 4.87086L4.67027
+      6.30371L6.76685 6.30371ZM4.67027 12.8794L4.67027 14.3121L6.76685
+      14.3121L6.76685 12.8794L4.67027 12.8794ZM8.26685 12.8794L8.26685
+      14.3121L10.387 14.3121L10.387 12.8794L8.26685 12.8794ZM11.887
+      12.8794L11.887 14.3121L14.0315 14.3121L14.0315 12.8794L11.887 12.8794Z"
+      fill="#A2B1C6"
+    />
+    </g>
+    <defs>
+      <clipPath id="clip0_2130_5292">
+        <rect
+        width="18"
+        height="18"
+        fill="white"
+        transform="translate(0.353027 18.5916) rotate(-90)"
+      />
+      </clipPath>
+    </defs>
+</svg>
+</template>
+
+<script>
+
+export default {
+  name: 'RowIcon'
+}
+</script>

src/components/svg/viewCellValue.vue

@@ -0,0 +1,50 @@
+<template>
+  <svg
+    width="19"
+    height="19"
+    viewBox="0 0 19 19"
+    fill="none"
+  >
+    <g clip-path="url(#clip0_2131_6054)">
+    <path
+      d="M3.53784 11.5846L3.53784 3.14734L11.9751 3.14734V7.676C12.4655 7.51991
+      12.9771 7.47439 13.4751 7.53264V3.14734C13.4751 2.31891 12.8035 1.64734
+      11.9751 1.64734L3.53784 1.64734C2.70941 1.64734 2.03784 2.31891 2.03784
+      3.14734L2.03784 11.5846C2.03784 12.413 2.70942 13.0846 3.53784
+      13.0846H10.0831C9.771 12.6184 9.58279 12.1055 9.51083
+      11.5846H3.53784Z"
+      fill="#A2B1C6"
+    />
+    <path
+      fill-rule="evenodd"
+      clip-rule="evenodd"
+      d="M14.7887 9.9291C15.4307 10.8837 15.1773 12.1779 14.2228
+      12.8199C13.2682 13.4618 11.974 13.2084 11.332 12.2539C10.69 11.2993
+      10.9434 10.0051 11.898 9.3631C12.8525 8.72113 14.1468 8.97454 14.7887
+      9.9291ZM14.4606 14.3901L16.6181 17.5982C16.8492 17.9419 17.3153 18.0331
+      17.659 17.802C18.0027 17.5708 18.0939 17.1048 17.8628 16.7611L15.6884
+      13.5279C16.7949 12.3365 16.9801 10.4996 16.0334 9.092C14.9292 7.45002
+      12.7029 7.01412 11.0609 8.1184C9.41891 9.22268 8.98302 11.449 10.0873
+      13.0909C11.062 14.5403 12.9109 15.05 14.4606 14.3901Z"
+      fill="#A2B1C6"
+    />
+  </g>
+  <defs>
+    <clipPath id="clip0_2131_6054">
+    <rect
+      width="18"
+      height="18"
+      fill="white"
+      transform="translate(0.5 18.5916) rotate(-90)"
+    />
+    </clipPath>
+  </defs>
+</svg>
+</template>
+
+<script>
+
+export default {
+  name: 'ViewCellValueIcon'
+}
+</script>

src/lib/csv.js

@@ -73,21 +73,26 @@ export default {
         comments: false,
         step: undefined,
         complete: results => {
-          const res = {
-            data: this.getResult(results),
-            delimiter: results.meta.delimiter,
-            hasErrors: false,
-            rowCount: results.data.length
+          let res
+          try {
+            res = {
+              data: this.getResult(results),
+              delimiter: results.meta.delimiter,
+              hasErrors: false,
+              rowCount: results.data.length
+            }
+            res.messages = results.errors.map(msg => {
+              msg.type = msg.code === 'UndetectableDelimiter' ? 'info' : 'error'
+              if (msg.type === 'error') res.hasErrors = true
+              msg.hint = hintsByCode[msg.code]
+              return msg
+            })
+          } catch (error) {
+            reject(error)
           }
-          res.messages = results.errors.map(msg => {
-            msg.type = msg.code === 'UndetectableDelimiter' ? 'info' : 'error'
-            if (msg.type === 'error') res.hasErrors = true
-            msg.hint = hintsByCode[msg.code]
-            return msg
-          })
           resolve(res)
         },
-        error: (error, file) => {
+        error: error => {
           reject(error)
         },
         download: false,

src/lib/database/_sql.js

@@ -8,11 +8,11 @@ function _getDataSourcesFromSqlResult (sqlResult) {
   if (!sqlResult) {
     return {}
   }
-  const dataSorces = {}
+  const dataSources = {}
   sqlResult.columns.forEach((column, index) => {
-    dataSorces[column] = sqlResult.values.map(row => row[index])
+    dataSources[column] = sqlResult.values.map(row => row[index])
   })
-  return dataSorces
+  return dataSources
 }
 
 export default class Sql {

src/lib/utils/clipboardIo.js

@@ -2,9 +2,11 @@ import Lib from 'plotly.js/src/lib'
 import dataUrlToBlob from 'dataurl-to-blob'
 
 export default {
-  async copyCsv (str) {
+  async copyText (str, notifyMessage) {
     await navigator.clipboard.writeText(str)
-    Lib.notifier('CSV copied to clipboard successfully', 'long')
+    if (notifyMessage) {
+      Lib.notifier(notifyMessage, 'long')
+    }
   },
 
   async copyImage (source) {

src/store/mutations.js

@@ -36,9 +36,11 @@ export default {
         state.currentTabId = state.tabs[index - 1].id
       } else {
         state.currentTabId = null
-        state.currentTab = null
         state.untitledLastIndex = 0
       }
+      state.currentTab = state.currentTabId
+        ? state.tabs.find(tab => tab.id === state.currentTabId)
+        : null
     }
     state.tabs.splice(index, 1)
   },

src/views/LoadView.vue

@@ -18,6 +18,7 @@
 import fu from '@/lib/utils/fileIo'
 import database from '@/lib/database'
 import Logs from '@/components/Logs'
+import events from '@/lib/utils/events'
 
 export default {
   name: 'LoadView',
@@ -46,6 +47,14 @@ export default {
       maximize
     } = this.$route.query
 
+    events.send('share.load', null, {
+      has_data_url: !!dataUrl,
+      data_format: dataFormat,
+      has_inquiry_url: !!inquiryUrl,
+      inquiry_id_count: (inquiryIds || []).length,
+      maximize
+    })
+
     await this.loadData(dataUrl, dataFormat)
     const inquiries = await this.loadInquiries(inquiryUrl, inquiryIds)
     if (inquiries && inquiries.length > 0) {

src/views/Main/Workspace/Tabs/Tab/DataView/Chart/index.vue

@@ -77,6 +77,7 @@ export default {
       },
       { deep: true }
     )
+    this.$emit('update:importToSvgEnabled', true)
   },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.handleResize)

src/views/Main/Workspace/Tabs/Tab/DataView/index.vue

@@ -41,7 +41,6 @@
       >
         <png-icon />
       </icon-button>
-
       <icon-button
         :disabled="!importToSvgEnabled"
         tooltip="Save as SVG"

src/views/Main/Workspace/Tabs/Tab/RunResult/Record/RowNavigator.vue

@@ -0,0 +1,69 @@
+<template>
+    <div class="record-navigator">
+        <icon-button
+            :disabled="value === 0"
+            tooltip="First row"
+            tooltip-position="top-left"
+            class="first"
+            @click="$emit('input', 0)"
+        >
+            <edge-arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === 0"
+            tooltip="Previous row"
+            tooltip-position="top-left"
+            class="prev"
+            @click="$emit('input', value - 1)"
+        >
+            <arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === total - 1"
+            tooltip="Next row"
+            tooltip-position="top-left"
+            class="next"
+            @click="$emit('input', value + 1)"
+        >
+            <arrow-icon :disabled="false" />
+        </icon-button>
+        <icon-button
+            :disabled="value === total - 1"
+            tooltip="Last row"
+            tooltip-position="top-left"
+            class="last"
+            @click="$emit('input', total - 1)"
+        >
+            <edge-arrow-icon :disabled="false" />
+        </icon-button>
+    </div>
+</template>
+
+<script>
+import IconButton from '@/components/IconButton'
+import ArrowIcon from '@/components/svg/arrow'
+import EdgeArrowIcon from '@/components/svg/edgeArrow'
+
+export default {
+  components: {
+    IconButton,
+    ArrowIcon,
+    EdgeArrowIcon
+  },
+  props: {
+    value: Number,
+    total: Number
+  }
+}
+</script>
+
+<style scoped>
+.record-navigator {
+    display: flex;
+}
+
+.record-navigator .next,
+.record-navigator .last {
+  transform: rotate(180deg);
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/Record/index.vue

@@ -0,0 +1,221 @@
+<template>
+  <div class="record-view">
+    <div class="table-container">
+      <table
+        ref="table"
+        class="sqliteviz-table"
+        tabindex="0"
+        @keydown="onTableKeydown"
+      >
+        <thead>
+          <tr>
+            <th/>
+            <th>
+              <div class="cell-data">
+                Row #{{ currentRowIndex + 1 }}
+              </div>
+            </th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="(col, index) in columns" :key="index">
+            <th class="column-cell">{{ col }}</th>
+            <td
+              :data-col="index"
+              :data-row="currentRowIndex"
+              :data-isNull="isNull(getCellValue(col))"
+              :data-isBlob="isBlob(getCellValue(col))"
+              :key="index"
+              :aria-selected="false"
+              @click="onCellClick"
+            >
+              <div class="cell-data">
+                {{ getCellText(col) }}
+              </div>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <div class="table-footer">
+      <div class="table-footer-count">
+        {{ rowCount }} {{rowCount === 1 ? 'row' : 'rows'}} retrieved
+        <span v-if="time">in {{ time }}</span>
+      </div>
+
+     <row-navigator v-model="currentRowIndex" :total="rowCount"/>
+    </div>
+  </div>
+</template>
+
+<script>
+import RowNavigator from './RowNavigator.vue'
+
+export default {
+  components: { RowNavigator },
+  props: {
+    dataSet: Object,
+    time: String,
+    rowIndex: { type: Number, default: 0 },
+    selectedColumnIndex: Number
+  },
+  data () {
+    return {
+      selectedCellElement: null,
+      currentRowIndex: this.rowIndex
+    }
+  },
+  computed: {
+    columns () {
+      return this.dataSet.columns
+    },
+    rowCount () {
+      return this.dataSet.values[this.columns[0]].length
+    }
+  },
+  mounted () {
+    const col = this.selectedColumnIndex
+    const row = this.currentRowIndex
+    const cell = this.$refs.table
+      .querySelector(`td[data-col="${col}"][data-row="${row}"]`)
+    if (cell) {
+      this.selectCell(cell)
+    }
+  },
+  watch: {
+    async currentRowIndex () {
+      await this.$nextTick()
+      if (this.selectedCellElement) {
+        const previouslySelected = this.selectedCellElement
+        this.selectCell(null)
+        this.selectCell(previouslySelected)
+      }
+    }
+  },
+  methods: {
+    isBlob (value) {
+      return value && ArrayBuffer.isView(value)
+    },
+    isNull (value) {
+      return value === null
+    },
+    getCellValue (col) {
+      return this.dataSet.values[col][this.currentRowIndex]
+    },
+    getCellText (col) {
+      const value = this.getCellValue(col)
+      if (this.isNull(value)) {
+        return 'NULL'
+      }
+      if (this.isBlob(value)) {
+        return 'BLOB'
+      }
+      return value
+    },
+    onTableKeydown (e) {
+      const keyCodeMap = {
+        38: 'up',
+        40: 'down'
+      }
+
+      if (
+        !this.selectedCellElement ||
+        !Object.keys(keyCodeMap).includes(e.keyCode.toString())
+      ) {
+        return
+      }
+      e.preventDefault()
+
+      this.moveFocusInTable(this.selectedCellElement, keyCodeMap[e.keyCode])
+    },
+    onCellClick (e) {
+      this.selectCell(e.target.closest('td'), false)
+    },
+    selectCell (cell, scrollTo = true) {
+      if (!cell) {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        this.selectedCellElement = cell
+      } else if (!cell.ariaSelected || cell.ariaSelected === 'false') {
+        if (this.selectedCellElement) {
+          this.selectedCellElement.ariaSelected = 'false'
+        }
+        cell.ariaSelected = 'true'
+        this.selectedCellElement = cell
+      } else {
+        cell.ariaSelected = 'false'
+        this.selectedCellElement = null
+      }
+
+      if (this.selectedCellElement && scrollTo) {
+        this.selectedCellElement.scrollIntoView()
+        this.selectedCellElement.closest('.table-container').scrollTo({ left: 0 })
+      }
+
+      this.$emit('updateSelectedCell', this.selectedCellElement)
+    },
+    moveFocusInTable (initialCell, direction) {
+      const currentColIndex = +initialCell.dataset.col
+      const newColIndex = direction === 'up'
+        ? currentColIndex - 1
+        : currentColIndex + 1
+
+      const newCell = this.$refs.table
+        .querySelector(`td[data-col="${newColIndex}"][data-row="${this.currentRowIndex}"]`)
+      if (newCell) {
+        this.selectCell(newCell)
+      }
+    }
+  }
+}
+</script>
+
+<style scoped>
+table.sqliteviz-table:focus {
+  outline: none;
+}
+.sqliteviz-table tbody td:hover {
+  background-color: var(--color-bg-light-3);
+}
+.sqliteviz-table tbody td[aria-selected="true"] {
+  box-shadow: inset 0 0 0 1px var(--color-accent);
+}
+
+table.sqliteviz-table {
+  margin-top: 0;
+}
+.sqliteviz-table thead tr th {
+  border-bottom: 1px solid var(--color-border-light);
+}
+.sqliteviz-table tbody tr th {
+  font-size: 14px;
+  font-weight: 600;
+  box-sizing: border-box;
+  background-color: var(--color-bg-dark);
+  color: var(--color-text-light);
+  border-bottom: 1px solid var(--color-border-light);
+  border-right: 1px solid var(--color-border-light);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  text-align: left;
+}
+
+.table-footer {
+  align-items: center;
+}
+.record-view {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+}
+
+.table-container {
+  flex-grow: 1;
+  overflow: auto;
+}
+
+.column-cell {
+  max-width: 150px;
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer.vue

@@ -0,0 +1,207 @@
+<template>
+  <div class="value-viewer">
+    <div class="value-viewer-toolbar">
+      <button
+        v-for="format in formats"
+        :key="format.value"
+        type="button"
+        :aria-selected="currentFormat === format.value"
+        :class="format.value"
+        @click="currentFormat = format.value"
+      >
+        {{ format.text }}
+      </button>
+
+      <button
+        type="button"
+        class="copy"
+        @click="copyToClipboard"
+      >
+        Copy
+      </button>
+    </div>
+    <div class="value-body">
+      <codemirror
+        v-if="currentFormat === 'json' && formattedJson"
+        :value="formattedJson"
+        :options="cmOptions"
+        class="json-value"
+      />
+      <pre
+        v-if="currentFormat === 'text'"
+        :class="['text-value', { 'meta-value': isNull || isBlob }]"
+      >{{ cellText }}</pre>
+      <logs
+        v-if="messages && messages.length > 0"
+        :messages="messages"
+        class="messages"
+      />
+    </div>
+  </div>
+</template>
+
+<script>
+import { codemirror } from 'vue-codemirror'
+import 'codemirror/lib/codemirror.css'
+import 'codemirror/mode/javascript/javascript.js'
+import 'codemirror/addon/fold/foldcode.js'
+import 'codemirror/addon/fold/foldgutter.js'
+import 'codemirror/addon/fold/foldgutter.css'
+import 'codemirror/addon/fold/brace-fold.js'
+import 'codemirror/theme/neo.css'
+import cIo from '@/lib/utils/clipboardIo'
+import Logs from '@/components/Logs'
+
+export default {
+  components: {
+    codemirror,
+    Logs
+  },
+  props: {
+    cellValue: [String, Number, Uint8Array]
+  },
+  data () {
+    return {
+      formats: [
+        { text: 'Text', value: 'text' },
+        { text: 'JSON', value: 'json' }
+      ],
+      currentFormat: 'text',
+      cmOptions: {
+        tabSize: 4,
+        mode: { name: 'javascript', json: true },
+        theme: 'neo',
+        lineNumbers: true,
+        line: true,
+        foldGutter: true,
+        gutters: ['CodeMirror-linenumbers', 'CodeMirror-foldgutter'],
+        readOnly: true
+      },
+      formattedJson: '',
+      messages: []
+    }
+  },
+  computed: {
+    isBlob () {
+      return this.cellValue && ArrayBuffer.isView(this.cellValue)
+    },
+    isNull () {
+      return this.cellValue === null
+    },
+    cellText () {
+      const value = this.cellValue
+      if (this.isNull) {
+        return 'NULL'
+      }
+      if (this.isBlob) {
+        return 'BLOB'
+      }
+      return value
+    }
+  },
+  watch: {
+    currentFormat () {
+      this.messages = []
+      this.formattedJson = ''
+      if (this.currentFormat === 'json') {
+        this.formatJson(this.cellValue)
+      }
+    },
+    cellValue () {
+      this.messages = []
+      if (this.currentFormat === 'json') {
+        this.formatJson(this.cellValue)
+      }
+    }
+  },
+  methods: {
+    formatJson (jsonStr) {
+      try {
+        this.formattedJson = JSON.stringify(
+          JSON.parse(jsonStr), null, 4
+        )
+      } catch (e) {
+        console.error(e)
+        this.formattedJson = ''
+        this.messages = [{
+          type: 'error',
+          message: 'Can\'t parse JSON.'
+        }]
+      }
+    },
+    copyToClipboard () {
+      cIo.copyText(this.currentFormat === 'json'
+        ? this.formattedJson
+        : this.cellValue,
+      'The value is copied to clipboard.'
+      )
+    }
+  }
+}
+</script>
+
+<style scoped>
+.value-viewer {
+  background-color: var(--color-white);
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+}
+.value-viewer-toolbar {
+  display: flex;
+  justify-content: end;
+}
+.value-body {
+  flex-grow: 1;
+  overflow: auto;
+}
+.text-value {
+  padding: 0 8px;
+  margin: 0;
+  color: var(--color-text-base);
+}
+
+.json-value {
+  margin-top: -4px;
+}
+
+.text-value.meta-value {
+  font-style: italic;
+  color: var(--color-text-light-2);
+}
+
+.messages {
+  margin: 0 8px;
+}
+
+.value-viewer-toolbar button {
+  font-size: 10px;
+  height: 20px;
+  padding: 0 8px;
+  border: none;
+  background: transparent;
+  color: var(--color-text-base);
+  border-radius: var(--border-radius-small);
+}
+
+.value-viewer-toolbar button:hover {
+  background-color: var(--color-bg-light);
+}
+
+.value-viewer-toolbar button[aria-selected="true"] {
+  color: var(--color-accent);
+}
+
+>>> .vue-codemirror {
+  height: 100%;
+  max-height: 100%;
+}
+>>> .CodeMirror {
+  height: 100%;
+  max-height: 100%;
+}
+>>> .CodeMirror-cursor {
+  width: 1px;
+  background: var(--color-text-base);
+}
+</style>

src/views/Main/Workspace/Tabs/Tab/RunResult/index.vue

@@ -1,31 +1,31 @@
 <template>
   <div class="run-result-panel" ref="runResultPanel">
-    <div class="run-result-panel-content">
-      <div
-        v-show="result === null && !isGettingResults && !error"
-        class="table-preview result-before"
-      >
-        Run your query and get results here
-      </div>
-      <div v-if="isGettingResults" class="table-preview result-in-progress">
-        <loading-indicator :size="30"/>
-        Fetching results...
-      </div>
-      <div
-        v-show="result === undefined && !isGettingResults && !error"
-        class="table-preview result-empty"
-      >
-        No rows retrieved according to your query
-      </div>
-      <logs v-if="error" :messages="[error]"/>
-      <sql-table
-        v-if="result"
-        :data-set="result"
-        :time="time"
-        :pageSize="pageSize"
-        class="straight"
-      />
-    </div>
+   <component
+      :is="viewValuePanelVisible ? 'splitpanes':'div'"
+      :before="{ size: 50, max: 100 }"
+      :after="{ size: 50, max: 100 }"
+      :default="{ before: 50, after: 50 }"
+      class="run-result-panel-content"
+    >
+      <template  #left-pane>
+        <div :id="'run-result-left-pane-'+tab.id" class="result-set-container"/>
+      </template>
+      <div :id="'run-result-result-set-'+tab.id" class="result-set-container"/>
+      <template #right-pane v-if="viewValuePanelVisible">
+        <div class="value-viewer-container">
+          <value-viewer
+            v-show="selectedCell"
+            :cellValue="selectedCell
+              ? result.values[result.columns[selectedCell.dataset.col]][selectedCell.dataset.row]
+              : ''"
+          />
+          <div v-show="!selectedCell" class="table-preview">
+            No cell selected to view
+          </div>
+        </div>
+      </template>
+    </component>
+
     <side-tool-bar @switchTo="$emit('switchTo', $event)" panel="table">
       <icon-button
         :disabled="!result"
@@ -44,6 +44,26 @@
       >
         <clipboard-icon/>
       </icon-button>
+
+      <icon-button
+        :disabled="!result"
+        tooltip="View record"
+        tooltip-position="top-left"
+        :active="viewRecord"
+        @click="toggleViewRecord"
+      >
+        <row-icon/>
+      </icon-button>
+
+      <icon-button
+        :disabled="!result"
+        tooltip="View value"
+        tooltip-position="top-left"
+        :active="viewValuePanelVisible"
+        @click="toggleViewValuePanel"
+      >
+        <view-cell-value-icon/>
+      </icon-button>
     </side-tool-bar>
 
     <loading-dialog
@@ -56,6 +76,48 @@
       @action="copyToClipboard"
       @cancel="cancelCopy"
     />
+
+    <teleport :to="resultSetTeleportTarget">
+      <div>
+            <div
+              v-show="result === null && !isGettingResults && !error"
+              class="table-preview result-before"
+            >
+              Run your query and get results here
+            </div>
+            <div v-if="isGettingResults" class="table-preview result-in-progress">
+              <loading-indicator :size="30"/>
+              Fetching results...
+            </div>
+            <div
+              v-show="result === undefined && !isGettingResults && !error"
+              class="table-preview result-empty"
+            >
+              No rows retrieved according to your query
+            </div>
+            <logs v-if="error" :messages="[error]"/>
+            <sql-table
+              v-if="result && !viewRecord"
+              :data-set="result"
+              :time="time"
+              :pageSize="pageSize"
+              :page="defaultPage"
+              :selected-cell-coordinates="defaultSelectedCell"
+              class="straight"
+              @updateSelectedCell="onUpdateSelectedCell"
+            />
+
+            <record
+              ref="recordView"
+              v-if="result && viewRecord"
+              :data-set="result"
+              :time="time"
+              :selected-column-index="selectedCell ? +selectedCell.dataset.col : 0"
+              :rowIndex="selectedCell ? +selectedCell.dataset.row : 0"
+              @updateSelectedCell="onUpdateSelectedCell"
+            />
+          </div>
+    </teleport>
   </div>
 </template>
 
@@ -63,9 +125,12 @@
 import Logs from '@/components/Logs'
 import SqlTable from '@/components/SqlTable'
 import LoadingIndicator from '@/components/LoadingIndicator'
-import SideToolBar from './SideToolBar'
+import SideToolBar from '../SideToolBar'
+import Splitpanes from '@/components/Splitpanes'
 import ExportToCsvIcon from '@/components/svg/exportToCsv'
 import ClipboardIcon from '@/components/svg/clipboard'
+import ViewCellValueIcon from '@/components/svg/viewCellValue'
+import RowIcon from '@/components/svg/row'
 import IconButton from '@/components/IconButton'
 import csv from '@/lib/csv'
 import fIo from '@/lib/utils/fileIo'
@@ -73,16 +138,30 @@ import cIo from '@/lib/utils/clipboardIo'
 import time from '@/lib/utils/time'
 import loadingDialog from '@/components/LoadingDialog'
 import events from '@/lib/utils/events'
+import Teleport from 'vue2-teleport'
+import ValueViewer from './ValueViewer'
+import Record from './Record/index.vue'
 
 export default {
   name: 'RunResult',
-  props: ['result', 'isGettingResults', 'error', 'time'],
+  props: {
+    tab: Object,
+    result: Object,
+    isGettingResults: Boolean,
+    error: Object,
+    time: [String, Number]
+  },
   data () {
     return {
       resizeObserver: null,
       pageSize: 20,
       preparingCopy: false,
-      dataToCopy: null
+      dataToCopy: null,
+      viewValuePanelVisible: false,
+      selectedCell: null,
+      viewRecord: false,
+      defaultPage: 1,
+      defaultSelectedCell: null
     }
   },
   components: {
@@ -93,7 +172,23 @@ export default {
     ExportToCsvIcon,
     IconButton,
     ClipboardIcon,
-    loadingDialog
+    ViewCellValueIcon,
+    RowIcon,
+    loadingDialog,
+    ValueViewer,
+    Record,
+    Splitpanes,
+    Teleport
+  },
+  computed: {
+    resultSetTeleportTarget () {
+      const base = `#${this.viewValuePanelVisible
+        ? 'run-result-left-pane'
+        : 'run-result-result-set'
+      }`
+      const tabIdPostfix = `-${this.tab.id}`
+      return base + tabIdPostfix
+    }
   },
   mounted () {
     this.resizeObserver = new ResizeObserver(this.handleResize)
@@ -103,6 +198,12 @@ export default {
   beforeDestroy () {
     this.resizeObserver.unobserve(this.$refs.runResultPanel)
   },
+  watch: {
+    result () {
+      this.defaultSelectedCell = null
+      this.selectedCell = null
+    }
+  },
   methods: {
     handleResize () {
       this.calculatePageSize()
@@ -160,13 +261,35 @@ export default {
     },
 
     copyToClipboard () {
-      cIo.copyCsv(this.dataToCopy)
+      cIo.copyText(this.dataToCopy, 'CSV copied to clipboard successfully')
       this.$modal.hide('prepareCSVCopy')
     },
 
     cancelCopy () {
       this.dataToCopy = null
       this.$modal.hide('prepareCSVCopy')
+    },
+
+    toggleViewValuePanel () {
+      this.viewValuePanelVisible = !this.viewValuePanelVisible
+    },
+
+    toggleViewRecord () {
+      if (this.viewRecord) {
+        this.defaultSelectedCell = {
+          row: this.$refs.recordView.currentRowIndex,
+          col: this.selectedCell ? +this.selectedCell.dataset.col : 0
+        }
+        this.defaultPage = Math.ceil(
+          (this.$refs.recordView.currentRowIndex + 1) / this.pageSize
+        )
+      }
+
+      this.viewRecord = !this.viewRecord
+    },
+
+    onUpdateSelectedCell (e) {
+      this.selectedCell = e
     }
   }
 }
@@ -180,12 +303,24 @@ export default {
 }
 
 .run-result-panel-content {
-  position: relative;
   flex-grow: 1;
   height: 100%;
   width: 0;
+}
+
+.result-set-container,
+.result-set-container > div {
+  position: relative;
+  height: 100%;
+  width: 100%;
   box-sizing: border-box;
 }
+.value-viewer-container {
+  height: 100%;
+  width: 100%;
+  background-color: var(--color-white);
+  position: relative;
+}
 
 .table-preview {
   position: absolute;
@@ -194,6 +329,7 @@ export default {
   transform: translate(-50%, -50%);
   color: var(--color-text-base);
   font-size: 13px;
+  text-align: center;
 }
 
 .result-in-progress {

src/views/Main/Workspace/Tabs/Tab/index.vue

@@ -29,6 +29,7 @@
 
     <teleport :to="`#${tab.layout.table}-${tab.id}`">
       <run-result
+        :tab="tab"
         :result="tab.result"
         :is-getting-results="tab.isGettingResults"
         :error="tab.error"

tests/lib/csv.spec.js

@@ -116,6 +116,33 @@ describe('csv.js', () => {
     await expect(csv.parse(file)).to.be.rejectedWith(err)
   })
 
+  it('parse rejects when getResult failed', async () => {
+    let err
+    try {
+      new Date('invalid date').toISOString()
+    } catch (e) {
+      err = e // get error message, it's different depending on browser
+    }
+    sinon.stub(Papa, 'parse').callsFake((file, config) => {
+      config.complete({
+        data: [
+          [1, new Date('invalid date')],
+          [2, new Date('2023-05-05T15:30:00Z')]
+        ],
+        errors: [],
+        meta: {
+          delimiter: ',',
+          linebreak: '\n',
+          aborted: false,
+          truncated: true
+        }
+      })
+    })
+
+    const file = {}
+    await expect(csv.parse(file)).to.be.rejectedWith(err.message)
+  })
+
   it('prepareForExport', () => {
     const resultSet = {
       columns: ['id', 'name'],

tests/lib/database/sqliteExtensions.spec.js

@@ -455,4 +455,85 @@ describe('SQLite extensions', function () {
       xx: [1], xy: [0], xz: [1], yx: [0], yy: [1], yz: [1], zx: [1], zy: [1], zz: [1]
     })
   })
+
+  it('supports simple Lua functions', async function () {
+    const actual = await db.execute(`
+      INSERT INTO
+        luafunctions(name, src)
+      VALUES
+        ('lua_inline', 'return {"arg"}, {"rv"}, "simple", function(arg) return arg + 1 end'),
+        ('lua_full', '
+        local input = {"arg"}
+        local output = {"rv"}
+
+        local function func(x)
+          return math.sin(math.pi) + x
+        end
+
+        return input, output, "simple", func
+        ');
+
+      SELECT lua_inline(1), lua_full(1) - 1 < 0.000001;
+    `)
+    expect(actual.values).to.eql({ 'lua_inline(1)': [2], 'lua_full(1) - 1 < 0.000001': [1] })
+  })
+
+  it('supports aggregate Lua functions', async function () {
+    const actual = await db.execute(`
+      INSERT INTO
+        luafunctions(name, src)
+      VALUES
+        ('lua_sum', '
+        local inputs = {"item"}
+        local outputs = {"sum"}
+
+        local function func(item)
+          if aggregate_now(item) then
+            return item
+          end
+
+          local sum = 0
+          while true do
+            if aggregate_now(item) then
+              break
+            end
+            sum = sum + item
+            item = coroutine.yield()
+          end
+
+          return sum
+        end
+
+        return inputs, outputs, "aggregate", func
+      ');
+
+      SELECT SUM(value), lua_sum(value) FROM generate_series(1, 10);
+    `)
+    expect(actual.values).to.eql({ 'SUM(value)': [55], 'lua_sum(value)': [55] })
+  })
+
+  it('supports table-valued Lua functions', async function () {
+    const actual = await db.execute(`
+      INSERT INTO
+        luafunctions(name, src)
+      VALUES
+        ('lua_match', '
+        local inputs = {"pattern", "s"}
+        local outputs = {"idx", "elm"}
+
+        local function func(pattern, s)
+          local i = 1
+          for k in s:gmatch(pattern) do
+            coroutine.yield(i, k)
+            i = i + 1
+          end
+        end
+
+        return inputs, outputs, "table", func
+      ');
+
+      SELECT * FROM lua_match('%w+', 'hello world from Lua');
+    `)
+    expect(actual.values).to.eql({ idx: [1, 2, 3, 4], elm: ['hello', 'world', 'from', 'Lua'] })
+  })
 })

tests/lib/utils/clipboardIo.spec.js

@@ -7,9 +7,9 @@ describe('clipboardIo.js', async () => {
     sinon.restore()
   })
 
-  it('copyCsv', async () => {
+  it('copyText', async () => {
     sinon.stub(navigator.clipboard, 'writeText').resolves(true)
-    await cIo.copyCsv('id\tname\r\n1\t2')
+    await cIo.copyText('id\tname\r\n1\t2')
     expect(navigator.clipboard.writeText.calledOnceWith('id\tname\r\n1\t2'))
   })
 

tests/lib/utils/time.spec.js

@@ -29,12 +29,12 @@ describe('time.js', () => {
   })
 
   it('sleep resolves after n ms', async () => {
-    let before = Date.now()
+    let before = performance.now()
     await time.sleep(10)
-    expect(Date.now() - before).to.be.least(10)
+    expect(performance.now() - before).to.be.least(10)
 
-    before = Date.now()
+    before = performance.now()
     await time.sleep(30)
-    expect(Date.now() - before).to.be.least(30)
+    expect(performance.now() - before).to.be.least(30)
   })
 })

tests/store/mutations.spec.js

@@ -176,13 +176,15 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2],
-      currentTabId: 1
+      currentTabId: 1,
+      currentTab: tab1
     }
 
     deleteTab(state, tab1)
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(2)
     expect(state.currentTabId).to.equal(2)
+    expect(state.currentTab).to.eql(tab2)
   })
 
   it('deleteTab - opened, last', () => {
@@ -208,13 +210,15 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2],
-      currentTabId: 2
+      currentTabId: 2,
+      currentTab: tab2
     }
 
     deleteTab(state, tab2)
     expect(state.tabs).to.have.lengthOf(1)
     expect(state.tabs[0].id).to.equal(1)
     expect(state.currentTabId).to.equal(1)
+    expect(state.currentTab).to.eql(tab1)
   })
 
   it('deleteTab - opened, in the middle', () => {
@@ -250,7 +254,8 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1, tab2, tab3],
-      currentTabId: 2
+      currentTabId: 2,
+      currentTab: tab2
     }
 
     deleteTab(state, tab2)
@@ -258,6 +263,7 @@ describe('mutations', () => {
     expect(state.tabs[0].id).to.equal(1)
     expect(state.tabs[1].id).to.equal(3)
     expect(state.currentTabId).to.equal(3)
+    expect(state.currentTab).to.eql(tab3)
   })
 
   it('deleteTab - opened, single', () => {
@@ -273,12 +279,14 @@ describe('mutations', () => {
 
     const state = {
       tabs: [tab1],
-      currentTabId: 1
+      currentTabId: 1,
+      currentTab: tab1
     }
 
     deleteTab(state, tab1)
     expect(state.tabs).to.have.lengthOf(0)
     expect(state.currentTabId).to.equal(null)
+    expect(state.currentTab).to.equal(null)
   })
 
   it('setCurrentTabId', () => {

tests/views/Main/Workspace/Tabs/Tab/DataView/DataView.spec.js

@@ -54,6 +54,10 @@ describe('DataView.vue', () => {
     const pivot = wrapper.findComponent({ name: 'pivot' }).vm
     sinon.spy(pivot, 'saveAsSvg')
 
+    // Switch to Custom Chart renderer
+    pivot.pivotOptions.rendererName = 'Custom chart'
+    await pivot.$nextTick()
+
     // Export to svg
     await svgBtn.trigger('click')
     expect(pivot.saveAsSvg.calledOnce).to.equal(true)

tests/views/Main/Workspace/Tabs/Tab/RunResult.spec.js

@@ -1,155 +0,0 @@
-import { expect } from 'chai'
-import { mount, createWrapper } from '@vue/test-utils'
-import RunResult from '@/views/Main/Workspace/Tabs/Tab/RunResult'
-import csv from '@/lib/csv'
-import sinon from 'sinon'
-
-describe('RunResult.vue', () => {
-  afterEach(() => {
-    sinon.restore()
-  })
-
-  it('shows alert when ClipboardItem is not supported', async () => {
-    const ClipboardItem = window.ClipboardItem
-    delete window.ClipboardItem
-    sinon.spy(window, 'alert')
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    expect(
-      window.alert.calledOnceWith(
-        "Your browser doesn't support copying into the clipboard. " +
-        'If you use Firefox you can enable it ' +
-        'by setting dom.events.asyncClipboard.clipboardItem to true.'
-      )
-    ).to.equal(true)
-
-    window.ClipboardItem = ClipboardItem
-  })
-
-  it('copy to clipboard more than 1 sec', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(5000)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // The dialog is shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
-
-    // ... with Building message...
-    expect(wrapper.find('.dialog-body').text()).to.equal('Building CSV...')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // The dialog is shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
-
-    // ... with Ready message...
-    expect(wrapper.find('.dialog-body').text()).to.equal('CSV is ready')
-
-    // Click copy
-    await wrapper.find('.dialog-buttons-container button.primary').trigger('click')
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-  })
-
-  it('copy to clipboard less than 1 sec', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.spy(wrapper.vm, 'copyToClipboard')
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(500)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-    // copyToClipboard is called
-    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(true)
-  })
-
-  it('cancel long copy', async () => {
-    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
-    const clock = sinon.useFakeTimers()
-    const wrapper = mount(RunResult, {
-      propsData: {
-        result: {
-          columns: ['id', 'name'],
-          values: {
-            id: [1],
-            name: ['foo']
-          }
-        }
-      }
-    })
-    sinon.spy(wrapper.vm, 'copyToClipboard')
-    sinon.stub(csv, 'serialize').callsFake(() => {
-      clock.tick(5000)
-    })
-
-    // Click copy to clipboard
-    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
-    await copyBtn.trigger('click')
-
-    // Switch to microtasks (let serialize run)
-    clock.tick(0)
-    await wrapper.vm.$nextTick()
-
-    // Click cancel
-    await wrapper.find('.dialog-buttons-container button.secondary').trigger('click')
-
-    // The dialog is not shown...
-    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
-    // copyToClipboard is not called
-    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(false)
-  })
-})

tests/views/Main/Workspace/Tabs/Tab/RunResult/Record.spec.js

@@ -0,0 +1,116 @@
+import { expect } from 'chai'
+import { mount } from '@vue/test-utils'
+import Record from '@/views/Main/Workspace/Tabs/Tab/RunResult/Record'
+
+describe('Record.vue', () => {
+  it('shows record with selected cell', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        },
+        rowIndex: 1,
+        selectedColumnIndex: 1
+      }
+    })
+
+    const rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(2)
+    expect(rows.at(0).findAll('th').at(0).text()).to.equals('id')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('2')
+    expect(rows.at(1).findAll('th').at(0).text()).to.equals('name')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('bar')
+
+    const selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('bar')
+  })
+
+  it('switches to the next or previous row', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2, 3],
+            name: ['foo', 'bar', 'baz']
+          }
+        },
+        rowIndex: 0,
+        selectedColumnIndex: 0
+      }
+    })
+
+    let rows = wrapper.findAll('tbody tr')
+    expect(rows).to.have.lengthOf(2)
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    let selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+
+    await wrapper.find('.next').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('2')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('bar')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('2')
+
+    await wrapper.find('.prev').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+
+    await wrapper.find('.last').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('3')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('baz')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('3')
+
+    await wrapper.find('.first').trigger('click')
+
+    rows = wrapper.findAll('tbody tr')
+    expect(rows.at(0).findAll('td').at(0).text()).to.equals('1')
+    expect(rows.at(1).findAll('td').at(0).text()).to.equals('foo')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('1')
+  })
+
+  it('removes selection when click on selected cell', async () => {
+    const wrapper = mount(Record, {
+      propsData: {
+        dataSet: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        },
+        rowIndex: 1,
+        selectedColumnIndex: 1
+      }
+    })
+
+    const selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    await selectedCell.trigger('click')
+
+    const selectedCellAfterClick = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCellAfterClick.exists()).to.equals(false)
+  })
+})

tests/views/Main/Workspace/Tabs/Tab/RunResult/RunResult.spec.js

@@ -0,0 +1,348 @@
+import { expect } from 'chai'
+import { mount, createWrapper } from '@vue/test-utils'
+import RunResult from '@/views/Main/Workspace/Tabs/Tab/RunResult'
+import csv from '@/lib/csv'
+import sinon from 'sinon'
+
+describe('RunResult.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('shows alert when ClipboardItem is not supported', async () => {
+    const ClipboardItem = window.ClipboardItem
+    delete window.ClipboardItem
+    sinon.spy(window, 'alert')
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    expect(
+      window.alert.calledOnceWith(
+        "Your browser doesn't support copying into the clipboard. " +
+        'If you use Firefox you can enable it ' +
+        'by setting dom.events.asyncClipboard.clipboardItem to true.'
+      )
+    ).to.equal(true)
+
+    window.ClipboardItem = ClipboardItem
+  })
+
+  it('copy to clipboard more than 1 sec', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(5000)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // The dialog is shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
+
+    // ... with Building message...
+    expect(wrapper.find('.dialog-body').text()).to.equal('Building CSV...')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // The dialog is shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(true)
+
+    // ... with Ready message...
+    expect(wrapper.find('.dialog-body').text()).to.equal('CSV is ready')
+
+    // Click copy
+    await wrapper.find('.dialog-buttons-container button.primary').trigger('click')
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+  })
+
+  it('copy to clipboard less than 1 sec', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.spy(wrapper.vm, 'copyToClipboard')
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(500)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+    // copyToClipboard is called
+    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(true)
+  })
+
+  it('cancel long copy', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1],
+            name: ['foo']
+          }
+        }
+      }
+    })
+    sinon.spy(wrapper.vm, 'copyToClipboard')
+    sinon.stub(csv, 'serialize').callsFake(() => {
+      clock.tick(5000)
+    })
+
+    // Click copy to clipboard
+    const copyBtn = createWrapper(wrapper.findComponent({ name: 'clipboardIcon' }).vm.$parent)
+    await copyBtn.trigger('click')
+
+    // Switch to microtasks (let serialize run)
+    clock.tick(0)
+    await wrapper.vm.$nextTick()
+
+    // Click cancel
+    await wrapper.find('.dialog-buttons-container button.secondary').trigger('click')
+
+    // The dialog is not shown...
+    expect(wrapper.find('[data-modal="prepareCSVCopy"]').exists()).to.equal(false)
+    // copyToClipboard is not called
+    expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(false)
+  })
+
+  it('shows value of selected cell - result set', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    /*
+    Result set:
+    |1 | foo
+    +--+-----
+    |2 | bar
+    */
+
+    // Click on '1' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(0).findAll('td').at(0).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Go to 'foo' with right arrow key
+    await wrapper.find('table').trigger('keydown.right')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Go to 'bar' with down arrow key
+    await wrapper.find('table').trigger('keydown.down')
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Go to '2' with left arrow key
+    await wrapper.find('table').trigger('keydown.left')
+    expect(wrapper.find('.value-body').text()).to.equals('2')
+
+    // Go to '1' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Click on 'bar' cell
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Click on 'bar' cell again
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-viewer-container .table-preview').text())
+      .to.equals('No cell selected to view')
+  })
+
+  it('shows value of selected cell - record view', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [1, 2],
+            name: ['foo', 'bar']
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    // Go to record view
+    const vierRecordBtn = createWrapper(
+      wrapper.findComponent({ name: 'rowIcon' }).vm.$parent
+    )
+    await vierRecordBtn.trigger('click')
+
+    /*
+    Record 1:
+    |id   | 1
+    +-----+-----
+    |name | foo
+
+    Record 2:
+    |id   | 2
+    +-----+-----
+    |name | bar
+
+    */
+
+    // Click '1' is selected by default
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Go to 'foo' with down arrow key
+    await wrapper.find('table').trigger('keydown.down')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Go to next record
+    await wrapper.find('.icon-btn.next').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('bar')
+
+    // Go to '2' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('2')
+
+    // Go to prev record
+    await wrapper.find('.icon-btn.prev').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('1')
+
+    // Click on 'foo' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(1).find('td').trigger('click')
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+
+    // Click on 'foo' cell again
+    await rows.at(1).find('td').trigger('click')
+    expect(wrapper.find('.value-viewer-container .table-preview').text())
+      .to.equals('No cell selected to view')
+  })
+
+  it('keeps selected cell when switch between record and regular view', async () => {
+    const wrapper = mount(RunResult, {
+      propsData: {
+        tab: { id: 1 },
+        result: {
+          columns: ['id', 'name'],
+          values: {
+            id: [...Array(30)].map((x, i) => i),
+            name: [...Array(30)].map((x, i) => `name-${i}`)
+          }
+        }
+      }
+    })
+
+    // Open cell value panel
+    const viewValueBtn = createWrapper(
+      wrapper.findComponent({ name: 'viewCellValueIcon' }).vm.$parent
+    )
+    await viewValueBtn.trigger('click')
+
+    // Click on 'name-1' cell
+    const rows = wrapper.findAll('table tbody tr')
+    await rows.at(1).findAll('td').at(1).trigger('click')
+
+    expect(wrapper.find('.value-body').text()).to.equals('name-1')
+
+    // Go to record view
+    const vierRecordBtn = createWrapper(
+      wrapper.findComponent({ name: 'rowIcon' }).vm.$parent
+    )
+    await vierRecordBtn.trigger('click')
+
+    // 'name-1' is selected
+    expect(wrapper.find('.value-body').text()).to.equals('name-1')
+    let selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('name-1')
+
+    // Go to last record
+    await wrapper.find('.icon-btn.last').trigger('click')
+    await wrapper.vm.$nextTick()
+    expect(wrapper.find('.value-body').text()).to.equals('name-29')
+
+    // Go to '29' with up arrow key
+    await wrapper.find('table').trigger('keydown.up')
+    expect(wrapper.find('.value-body').text()).to.equals('29')
+
+    // Go to regular view
+    await vierRecordBtn.trigger('click')
+
+    // '29' is selected
+    expect(wrapper.find('.value-body').text()).to.equals('29')
+    selectedCell = wrapper
+      .find('.sqliteviz-table tbody td[aria-selected="true"]')
+    expect(selectedCell.text()).to.equals('29')
+  })
+})

tests/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer.spec.js

@@ -0,0 +1,44 @@
+import { expect } from 'chai'
+import { mount } from '@vue/test-utils'
+import ValueViewer from '@/views/Main/Workspace/Tabs/Tab/RunResult/ValueViewer'
+import sinon from 'sinon'
+
+describe('ValueViewer.vue', () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('shows value in text mode', async () => {
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+
+    expect(wrapper.find('.value-body').text()).to.equals('foo')
+  })
+
+  it('shows error in json mode if the value is not json', async () => {
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+    await wrapper.find('button.json').trigger('click')
+    expect(wrapper.find('.value-body').text()).to.equals('Can\'t parse JSON.')
+  })
+
+  it('copy to clipboard', async () => {
+    sinon.stub(window.navigator.clipboard, 'writeText').resolves()
+    const wrapper = mount(ValueViewer, {
+      propsData: {
+        cellValue: 'foo'
+      }
+    })
+
+    await wrapper.find('button.copy').trigger('click')
+
+    expect(window.navigator.clipboard.writeText.calledOnceWith('foo'))
+      .to.equal(true)
+  })
+})