MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0
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.