- 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 PROFILING table provides
statement profiling information. Its contents correspond to the
information produced by the SHOW
PROFILES and SHOW PROFILE
statements (see Section 12.4.5.33, “SHOW PROFILES Syntax”). The table is
empty unless the profiling
session variable is set to 1.
INFORMATION_SCHEMA
Name |
SHOW
Name |
Remarks |
QUERY_ID |
Query_ID |
|
SEQ |
|
|
STATE |
Status |
|
DURATION |
Duration |
|
CPU_USER |
CPU_user |
|
CPU_SYSTEM |
CPU_system |
|
CONTEXT_VOLUNTARY |
Context_voluntary |
|
CONTEXT_INVOLUNTARY |
Context_involuntary |
|
BLOCK_OPS_IN |
Block_ops_in |
|
BLOCK_OPS_OUT |
Block_ops_out |
|
MESSAGES_SENT |
Messages_sent |
|
MESSAGES_RECEIVED |
Messages_received |
|
PAGE_FAULTS_MAJOR |
Page_faults_major |
|
PAGE_FAULTS_MINOR |
Page_faults_minor |
|
SWAPS |
Swaps |
|
SOURCE_FUNCTION |
Source_function |
|
SOURCE_FILE |
Source_file |
|
SOURCE_LINE |
Source_line |
Notes:
The
PROFILINGtable was added in MySQL 5.1.24 but contains no information unless theSHOW PROFILEfeature is enabled. TheSHOW PROFILEfeature is not included in binary distributions by default until MySQL 5.1.28.QUERY_IDis a numeric statement identifier.SEQis a sequence number indicating the display order for rows with the sameQUERY_IDvalue.STATEis the profiling state to which the row measurements apply.DURATIONindicates how long statement execution remained in the given state, in seconds.CPU_USERandCPU_SYSTEMindicate user and system CPU use, in seconds.CONTEXT_VOLUNTARYandCONTEXT_INVOLUNTARYindicate how many voluntary and involuntary context switches occurred.BLOCK_OPS_INandBLOCK_OPS_OUTindicate the number of block input and output operations.MESSAGES_SENTandMESSAGES_RECEIVEDindicate the number of communication messages sent and received.PAGE_FAULTS_MAJORandPAGE_FAULTS_MINORindicate the number of major and minor page faults.SWAPSindicates how many swaps occurred.SOURCE_FUNCTION,SOURCE_FILE, andSOURCE_LINEprovide information indicating where in the source code the profiled state executes.
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