MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6
These views list normalized statements that have used temporary tables. By default, rows are sorted by descending number of on-disk temporary tables used and descending number of in-memory temporary tables used.
The statements_with_temp_tables
and
x$statements_with_temp_tables
views have these columns:
query
The normalized statement string.
db
The default database for the statement, or
NULL if there is none.
exec_count
The total number of times the statement has executed.
total_latency
The total wait time of timed occurrences of the statement.
memory_tmp_tables
The total number of internal in-memory temporary tables created by occurrences of the statement.
disk_tmp_tables
The total number of internal on-disk temporary tables created by occurrences of the statement.
avg_tmp_tables_per_query
The average number of internal temporary tables created per occurrence of the statement.
tmp_tables_to_disk_pct
The percentage of internal in-memory temporary tables that were converted to on-disk tables.
first_seen
The time at which the statement was first seen.
last_seen
The time at which the statement was most recently seen.
digest
The statement digest.