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SingleStoreDB v8.0

SHOW COLUMNS

Show the list of columns within a given table.

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.

  • WHERE expr can be used to filter the results by other predicates. SQL WHERE clause.

  • This command must be run on the Master Aggregator or a child aggregator node (see Node Requirements for SingleStoreDB Commands).

  • 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

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)
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