> 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_create.md).

# COLUMN\_CREATE

## Syntax

```bnf
COLUMN_CREATE(column_nr, value [as type], [column_nr, value [as type]]...)
COLUMN_CREATE(column_name, value [as type], [column_name, value [as type]]...)
```

## Description

Returns a [dynamic columns](/docs/server/reference/sql-structure/nosql/dynamic-columns.md) blob that stores the specified columns with values.

The return value is suitable for

* storing in a table;
* further modification with other dynamic columns functions.

The **`as type`** part allows one to specify the value type. In most cases, this is redundant because MariaDB will be able to deduce the type of the value. Explicit type specification may be needed when the type of the value is not apparent. For example, a literal `'2012-12-01'` has a CHAR type by default, one will need to specify `'2012-12-01' AS DATE` to have it stored as a date. See [Dynamic Columns:Datatypes](/docs/server/reference/sql-structure/nosql/dynamic-columns.md#datatypes) for further details.

## Examples

```sql
INSERT INTO tbl SET dyncol_blob=COLUMN_CREATE("column_name", "value");
```

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

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