SHOW KEYS

Warning

SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.

Syntax

SHOW KEYS
{FROM | IN} tbl_name
[{FROM | IN} db_name]
[WHERE expr]

Remarks

tbl_name - name of a table in a SingleStore database.
db_name - name of a SingleStore database.
expr - SQL WHERE clause
This command must be run on the master aggregator or a child aggregator node (see Node Requirements for SingleStore Commands).

Output

Column	Description
`Table`	Table name
`Non_unique`	Non-unique
`Key_name`	Key name
`Seq_in_index`	Sequence in the index
`Column_name`	Column name
`Collation`	Collation
`Cardinality`	Cardinality
`Sub_part`	Sub-part
`Packed`	Packed
`Null`	Null
`Index_type`	Index type (see Index)
`Comment`	Comment
`Index_comment`	Comment

Example

SHOW KEYS in mytbl;
+-------+------------+-----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table | Non_unique | Key_name  | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+-------+------------+-----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| mytbl |          1 | seq       |            1 | seq         | NULL      |        NULL |     NULL | NULL   | YES  | BTREE      |         |               |
| mytbl |          1 | seq_index |            1 | seq         | NULL      |        NULL |     NULL | NULL   | YES  | BTREE      |         |               |
+-------+------------+-----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
2 rows in set (0.00 sec)