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How-to-rename-tables-and-columns-after-CSV-import.md
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How-to-rename-tables-and-columns-after-CSV-import.md
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# Rename columns
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If sqliteviz parses CSV without `Use first row as column headers` option then
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it will name the columns like `col1`, `col2` etc. You can easily rename the
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columns after import with `ALTER TABLE` statements like this:
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```sql
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ALTER TABLE your_table_name
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RENAME COLUMN current_column_name TO new_column_name;
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```
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## Column rename example
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There is a table `dots` with columns `col1`, `col2`, `col3`. Here are the steps
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to rename the columns to `x`, `y` and `z` respectively:
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- Click `Create` in the top toolbar
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- In the opened query editor write a script
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```sql
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ALTER TABLE dots
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RENAME COLUMN col1 TO x;
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ALTER TABLE dots
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RENAME COLUMN col2 TO y;
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ALTER TABLE dots
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RENAME COLUMN col3 TO z;
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```
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- Click <img src="./img/run.svg"/> to run the script
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# Rename table
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```sql
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ALTER TABLE current_table_name
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RENAME TO new_table_name;
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```
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## Table rename example
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There is a table `dots`. Here are the steps to rename it to `point`:
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- Click `Create` in the top toolbar
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- In the opened query editor write a script
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```sql
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ALTER TABLE dots RENAME TO point
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```
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- Click <img src="./img/run.svg"/> to run the script
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