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.
SHOW KEYS
On this page
Show the list of keys associated with a given table.
Syntax
SHOW KEYS
{FROM | IN} tbl_name
[{FROM | IN} db_name]
[WHERE expr]
Remarks
-
tbl_
- name of a table in a SingleStore database.name -
db_
- name of a SingleStore database.name -
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 name |
|
Non-unique |
|
Key name |
|
Sequence in the index |
|
Column name |
|
Collation |
|
Cardinality |
|
Sub-part |
|
Packed |
|
Null |
|
Index type (see 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)
Last modified: June 22, 2022