- 20 INFORMATION_SCHEMA Tables
- 20.1 The INFORMATION_SCHEMA SCHEMATA Table
- 20.2 The INFORMATION_SCHEMA TABLES Table
- 20.3 The INFORMATION_SCHEMA COLUMNS Table
- 20.4 The INFORMATION_SCHEMA STATISTICS Table
- 20.5 The INFORMATION_SCHEMA USER_PRIVILEGES Table
- 20.6 The INFORMATION_SCHEMA SCHEMA_PRIVILEGES Table
- 20.7 The INFORMATION_SCHEMA TABLE_PRIVILEGES Table
- 20.8 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table
- 20.9 The INFORMATION_SCHEMA CHARACTER_SETS Table
- 20.10 The INFORMATION_SCHEMA COLLATIONS Table
- 20.11 The INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY Table
- 20.12 The INFORMATION_SCHEMA TABLE_CONSTRAINTS Table
- 20.13 The INFORMATION_SCHEMA KEY_COLUMN_USAGE Table
- 20.14 The INFORMATION_SCHEMA ROUTINES Table
- 20.15 The INFORMATION_SCHEMA VIEWS Table
- 20.16 The INFORMATION_SCHEMA TRIGGERS Table
- 20.17 The INFORMATION_SCHEMA PLUGINS Table
- 20.18 The INFORMATION_SCHEMA ENGINES Table
- 20.19 The INFORMATION_SCHEMA PARTITIONS Table
- 20.20 The INFORMATION_SCHEMA EVENTS Table
- 20.21 The INFORMATION_SCHEMA FILES Table
- 20.22 The INFORMATION_SCHEMA PROCESSLIST Table
- 20.23 The INFORMATION_SCHEMA REFERENTIAL_CONSTRAINTS Table
- 20.24 The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables
- 20.25 The INFORMATION_SCHEMA GLOBAL_VARIABLES and SESSION_VARIABLES Tables
- 20.26 The INFORMATION_SCHEMA PROFILING Table
- 20.27 Other INFORMATION_SCHEMA Tables
- 20.28 Extensions to SHOW Statements
The
GLOBAL_VARIABLES
and
SESSION_VARIABLES
tables provide information about server status variables. Their
contents correspond to the information produced by the
SHOW GLOBAL
VARIABLES and
SHOW SESSION
VARIABLES statements (see
Section 12.4.5.41, “SHOW VARIABLES Syntax”).
INFORMATION_SCHEMA
Name |
SHOW
Name |
Remarks |
| VARIABLE_NAME | Variable_name | |
| VARIABLE_VALUE | Value |
Notes:
The
GLOBAL_VARIABLESandSESSION_VARIABLEStables were added in MySQL 5.1.12.Beginning with MySQL 5.1.19, the
VARIABLE_VALUEcolumn for each of these tables is defined asVARCHAR(20480). Previously, this column had the data typeLONGTEXT; this was changed in order to make these tables consistent with theGLOBAL_STATUSandSESSION_STATUStables, whose definitions had been changed in that version (see Section 20.24, “TheINFORMATION_SCHEMA GLOBAL_STATUSandSESSION_STATUSTables”).
User Comments
Add your own comment.