MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4
These views list normalized statements with aggregated statistics. The content mimics the MySQL Enterprise Monitor Query Analysis view. By default, rows are sorted by descending total latency.
The statement_analysis and
x$statement_analysis views have
these columns:
query
The normalized statement string.
db
The default database for the statement, or
NULL if there is none.
full_scan
The total number of full table scans performed by occurrences of the statement.
exec_count
The total number of times the statement has executed.
err_count
The total number of errors produced by occurrences of the statement.
warn_count
The total number of warnings produced by occurrences of the statement.
total_latency
The total wait time of timed occurrences of the statement.
max_latency
The maximum single wait time of timed occurrences of the statement.
avg_latency
The average wait time per timed occurrence of the statement.
lock_latency
The total time waiting for locks by timed occurrences of the statement.
cpu_latency
The time spent on CPU for the current thread.
rows_sent
The total number of rows returned by occurrences of the statement.
rows_sent_avg
The average number of rows returned per occurrence of the statement.
rows_examined
The total number of rows read from storage engines by occurrences of the statement.
rows_examined_avg
The average number of rows read from storage engines per occurrence of the statement.
rows_affected
The total number of rows affected by occurrences of the statement.
rows_affected_avg
The average number of rows affected per occurrence of the statement.
tmp_tables
The total number of internal in-memory temporary tables created by occurrences of the statement.
tmp_disk_tables
The total number of internal on-disk temporary tables created by occurrences of the statement.
rows_sorted
The total number of rows sorted by occurrences of the statement.
sort_merge_passes
The total number of sort merge passes by occurrences of the statement.
max_controlled_memory
The maximum amount of controlled memory (bytes) used by the statement.
max_total_memory
The maximum amount of memory (bytes) used by the statement.
digest
The statement digest.
first_seen
The time at which the statement was first seen.
last_seen
The time at which the statement was most recently seen.