SHOW INDEXES

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 INDEXES
{FROM | IN} tbl_name
[{FROM | IN} db_name]

Remarks

tbl_name - name of a table in a SingleStore database.
db_name - name of a SingleStore database.
This command must be run on the master aggregator or a child aggregator node (see Node Requirements for SingleStore Commands).
Refer to the Permission Matrix for the required permission.

Output

Column	Description
`Table`	Table name
`Non_unique`	`1` if non-unique, `0` if unique
`Key_name`	Index (key) name
`Seq_in_index`	Ordinal position of key column in index
`Column_name`	Column name (keys can have one or more columns)
`Collation`	Collation of string column, if applicable
`Cardinality`	Always `NULL` (not applicable in SingleStore)
`Sub_part`	Always `NULL` (not applicable in SingleStore)
`Packed`	Always `NULL` (not applicable in SingleStore)
`Null`	`YES` if values in the key column can be `NULL`, else blank
`Index_type`	The type of index. If index type is `BTREE`, then index is a SingleStore skip list. See Index.
`Comment`	Always blank (not used in SingleStore)
`Index_comment`	Always blank (not used in SingleStore)

Example

SHOW INDEXES 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)