Important

New database features are no longer connected to engine versions; features are now enabled independently during scheduled update windows, and “major” and “minor” releases no longer exist in Helios. Please visit the release notes to view the latest features available in your database clusters.

SHOW COLUMNS

Syntax

SHOW [FULL] COLUMNS {FROM | IN} tbl_name [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr]

Remarks

LIKE 'pattern' can be used to filter the list by name. SQL LIKE clause.
See the Permission Matrix for the required permission.

Output

Column	Description
`Field`	Field name
`Type`	Data types
`Null`	Whether this column allows nulls
`Key`	An attribute or attributes that uniquely identify table rows. There are several types of keys with the most common being primary, unique, and foreign.
`Default`	Default value, if applicable
`Extra`	Additional information

Example

SQL

SHOW COLUMNS IN mytbl;
+----------+------------+------+-----+---------+-------+
| Field    | Type       | Null | Key | Default | Extra |
+----------+------------+------+-----+---------+-------+
| seq      | int(11)    | YES  | MUL | NULL    |       |
| state    | int(11)    | YES  |     | NULL    |       |
| st_case  | varchar(8) | YES  |     | NULL    |       |
| veh_no   | varchar(2) | YES  |     | NULL    |       |
| drimpair | varchar(2) | YES  |     | NULL    |       |
+----------+------------+------+-----+---------+-------+
5 rows in set (0.00 sec)