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13.7.6.35 SHOW STATUS Syntax
SHOW STATUS
provides server
status information (see
Section 5.1.10, “Server Status Variables”). This statement does
not require any privilege. It requires only the ability to
connect to the server.
Status variable information is also available from these sources:
Performance Schema tables. See Section 26.12.14, “Performance Schema Status Variable Tables”.
The mysqladmin extended-status command. See Section 4.5.2, “mysqladmin — Client for Administering a MySQL Server”.
For SHOW STATUS
, a
LIKE
clause, if present, indicates
which variable names to match. A WHERE
clause
can be given to select rows using more general conditions, as
discussed in Section 25.42, “Extensions to SHOW Statements”.
SHOW STATUS
accepts an optional
GLOBAL
or SESSION
variable
scope modifier:
With a
GLOBAL
modifier, the statement displays the global status values. A global status variable may represent status for some aspect of the server itself (for example,Aborted_connects
), or the aggregated status over all connections to MySQL (for example,Bytes_received
andBytes_sent
). If a variable has no global value, the session value is displayed.With a
SESSION
modifier, the statement displays the status variable values for the current connection. If a variable has no session value, the global value is displayed.LOCAL
is a synonym forSESSION
.If no modifier is present, the default is
SESSION
.
The scope for each status variable is listed at Section 5.1.10, “Server Status Variables”.
Each invocation of the SHOW
STATUS
statement uses an internal temporary table and
increments the global
Created_tmp_tables
value.
Partial output is shown here. The list of names and values may differ for your server. The meaning of each variable is given in Section 5.1.10, “Server Status Variables”.
- +--------------------------+------------+
- +--------------------------+------------+
- | Aborted_clients | 0 |
- | Aborted_connects | 0 |
- | Bytes_received | 155372598 |
- | Bytes_sent | 1176560426 |
- | Connections | 30023 |
- | Created_tmp_disk_tables | 0 |
- | Created_tmp_tables | 8340 |
- | Created_tmp_files | 60 |
- ...
- | Open_tables | 1 |
- | Open_files | 2 |
- | Open_streams | 0 |
- | Opened_tables | 44600 |
- | Questions | 2026873 |
- ...
- | Table_locks_immediate | 1920382 |
- | Table_locks_waited | 0 |
- | Threads_cached | 0 |
- | Threads_created | 30022 |
- | Threads_connected | 1 |
- | Threads_running | 1 |
- | Uptime | 80380 |
- +--------------------------+------------+
With a LIKE
clause, the statement
displays only rows for those variables with names that match the
pattern:
- +--------------------+----------+
- +--------------------+----------+
- | Key_blocks_used | 14955 |
- | Key_read_requests | 96854827 |
- | Key_reads | 162040 |
- | Key_write_requests | 7589728 |
- | Key_writes | 3813196 |
- +--------------------+----------+
Document created the 26/06/2006, last modified the 26/10/2018
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