Oracle 5.0 Reference Manual page 551

The number of statements executed by the server. As of MySQL 5.0.72, this includes only
statements sent to the server by clients and no longer includes statements executed within stored
programs, unlike the
COM_STMT_PREPARE, COM_STMT_CLOSE, or
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Rpl_status
The status of fail-safe replication (not implemented). This variable is unused and is removed in
MySQL 5.6.
•
Select_full_join
The number of joins that perform table scans because they do not use indexes. If this value is not 0,
you should carefully check the indexes of your tables.
•
Select_full_range_join
The number of joins that used a range search on a reference table.
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Select_range
The number of joins that used ranges on the first table. This is normally not a critical issue even if the
value is quite large.
•
Select_range_check
The number of joins without keys that check for key usage after each row. If this is not 0, you should
carefully check the indexes of your tables.
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Select_scan
The number of joins that did a full scan of the first table.
•
Slave_open_temp_tables
The number of temporary tables that the slave SQL thread currently has open. If the value is greater
than zero, it is not safe to shut down the slave; see
Tables".
•
Slave_retried_transactions
The total number of times since startup that the replication slave SQL thread has retried transactions.
This variable was added in version 5.0.4.
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Slave_running
This is if this server is a replication slave that is connected to a replication master, and both the I/
ON
O and SQL threads are running; otherwise, it is OFF.
•
Slow_launch_threads
The number of threads that have taken more than
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Slow_queries
The number of queries that have taken more than
increments regardless of whether the slow query log is enabled. For information about that log, see
Section 5.2.4, "The Slow Query
•
Sort_merge_passes
The number of merge passes that the sort algorithm has had to do. If this value is large, you should
consider increasing the value of the
Server Status Variables
variable. This variable does not count COM_PING, COM_STATISTICS,
Queries
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Log".
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sort_buffer_size
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commands.
COM_STMT_RESET
Section 16.4.1.15, "Replication and Temporary
slow_launch_time
long_query_time
[493] system variable.
[492] seconds to create.
[465] seconds. This counter