MySQL 5.5 Reference Manual :: 19 INFORMATION_SCHEMA Tables :: 19.4 The INFORMATION_SCHEMA STATISTICS Table
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- 19 INFORMATION_SCHEMA Tables
- 19.1 The INFORMATION_SCHEMA SCHEMATA Table
- 19.2 The INFORMATION_SCHEMA TABLES Table
- 19.3 The INFORMATION_SCHEMA COLUMNS Table
- 19.4 The INFORMATION_SCHEMA STATISTICS Table
- 19.5 The INFORMATION_SCHEMA USER_PRIVILEGES Table
- 19.6 The INFORMATION_SCHEMA SCHEMA_PRIVILEGES Table
- 19.7 The INFORMATION_SCHEMA TABLE_PRIVILEGES Table
- 19.8 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table
- 19.9 The INFORMATION_SCHEMA CHARACTER_SETS Table
- 19.10 The INFORMATION_SCHEMA COLLATIONS Table
- 19.11 The INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY Table
- 19.12 The INFORMATION_SCHEMA TABLE_CONSTRAINTS Table
- 19.13 The INFORMATION_SCHEMA KEY_COLUMN_USAGE Table
- 19.14 The INFORMATION_SCHEMA ROUTINES Table
- 19.15 The INFORMATION_SCHEMA VIEWS Table
- 19.16 The INFORMATION_SCHEMA TRIGGERS Table
- 19.17 The INFORMATION_SCHEMA PLUGINS Table
- 19.18 The INFORMATION_SCHEMA ENGINES Table
- 19.19 The INFORMATION_SCHEMA PARTITIONS Table
- 19.20 The INFORMATION_SCHEMA EVENTS Table
- 19.21 The INFORMATION_SCHEMA FILES Table
- 19.22 The INFORMATION_SCHEMA TABLESPACES Table
- 19.23 The INFORMATION_SCHEMA PROCESSLIST Table
- 19.24 The INFORMATION_SCHEMA REFERENTIAL_CONSTRAINTS Table
- 19.25 The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables
- 19.26 The INFORMATION_SCHEMA GLOBAL_VARIABLES and SESSION_VARIABLES Tables
- 19.27 The INFORMATION_SCHEMA PARAMETERS Table
- 19.28 The INFORMATION_SCHEMA PROFILING Table
- 19.29 Other INFORMATION_SCHEMA Tables
- 19.30 Extensions to SHOW Statements
The STATISTICS table provides
information about table indexes.
INFORMATION_SCHEMA
Name |
SHOW
Name |
Remarks |
TABLE_CATALOG |
def |
|
TABLE_SCHEMA |
= Database | |
TABLE_NAME |
Table |
|
NON_UNIQUE |
Non_unique |
|
INDEX_SCHEMA |
= Database | |
INDEX_NAME |
Key_name |
|
SEQ_IN_INDEX |
Seq_in_index |
|
COLUMN_NAME |
Column_name |
|
COLLATION |
Collation |
|
CARDINALITY |
Cardinality |
|
SUB_PART |
Sub_part |
MySQL extension |
PACKED |
Packed |
MySQL extension |
NULLABLE |
Null |
MySQL extension |
INDEX_TYPE |
Index_type |
MySQL extension |
COMMENT |
Comment |
MySQL extension |
Notes:
-
There is no standard table for indexes. The preceding list is similar to what SQL Server 2000 returns for
sp_statistics, except that we replaced the nameQUALIFIERwithCATALOGand we replaced the nameOWNERwithSCHEMA.Clearly, the preceding table and the output from
SHOW INDEXare derived from the same parent. So the correlation is already close.
The following statements are equivalent:
SELECT * FROM INFORMATION_SCHEMA.STATISTICS WHERE table_name = 'tbl_name' AND table_schema = 'db_name' SHOW INDEX FROMtbl_nameFROMdb_name
User Comments
Quite handy if you want to view all indices in a database:
SELECT table_name, index_name, column_name FROM INFORMATION_SCHEMA.STATISTICS WHERE table_schema = 'dbname' ORDER BY table_name, index_name, seq_in_index
Add your own comment.