> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_delete.md).

# COLUMN\_DELETE

## Syntax

```bnf
COLUMN_DELETE(dyncol_blob, column_nr, column_nr...)
COLUMN_DELETE(dyncol_blob, column_name, column_name...)
```

## Description

Deletes a [dynamic column](/docs/server/reference/sql-structure/nosql/dynamic-columns.md) with the specified name. Multiple names can be given. The return value is a dynamic column blob after the modification.

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