GS_SQL_COUNT¶
GS_SQL_COUNT displays statistics about the five types of statements (SELECT, INSERT, UPDATE, DELETE, and MERGE INTO) executed on the current node of the database, including the number of execution times, response time (the maximum, minimum, average, and total response time of the other four types of statements except the MERGE INTO statement, in microseconds), and the number of execution times of DDL, DML, and DCL statements.
The classification of DDL, DML, and DCL statements in the GS_SQL_COUNT view is slightly different from that of the SQL syntaxt. The details are as follows:
User-related statements, such as CREATE/ALTER/DROP USER and CREATE/ALTER/DROP ROLE, are of the DCL type.
Transaction-related statements such as BEGIN/COMMIT/SET CONSTRAINTS/ROLLBACK/SAVEPOINT/START are of the DCL type.
ALTER SYSTEM KILL SESSION is equivalent to the SELECT pg_terminate_backend() statement and is of the DML type.
The classification of other statements is similar to the definition in the SQL syntax.
When a common user queries the GS_SQL_COUNT view, only the statistics of this user in the current node can be viewed. When a user with the administrator permissions queries the GS_SQL_COUNT view, the statistics of all users in the current node can be viewed. When the cluster or the node is restarted, the statistics are cleared and the counting restarts. The counting is based on the number of queries received by the node, including the queries performed inside the cluster. Statistics about the GS_SQL_COUNT view are collected only on CNs, and SQL statements sent from other CNs are not collected. No result is returned when you query the view on a DN.
Name | Type | Description |
|---|---|---|
node_name | name | Node name |
user_name | name | User name |
select_count | bigint | Number of SELECT statements |
update_count | bigint | Number of UPDATE statements |
insert_count | bigint | Number of INSERT statements |
delete_count | bigint | Number of DELETE statements |
mergeinto_count | bigint | Number of MERGE INTO statements |
ddl_count | bigint | Number of DDL statements |
dml_count | bigint | Number of DML statements |
dcl_count | bigint | Number of DCL statements |
total_select_elapse | bigint | Total response time of SELECT statements |
avg_select_elapse | bigint | Average response time of SELECT statements |
max_select_elapse | bigint | Maximum response time of SELECT statements |
min_select_elapse | bigint | Minimum response time of SELECT statements |
total_update_elapse | bigint | Total response time of UPDATE statements |
avg_update_elapse | bigint | Average response time of UPDATE statements |
max_update_elapse | bigint | Maximum response time of UPDATE statements |
min_update_elapse | bigint | Minimum response time of UPDATE statements |
total_delete_elapse | bigint | Total response time of DELETE statements |
avg_delete_elapse | bigint | Average response time of DELETE statements |
max_delete_elapse | bigint | Maximum response time of DELETE statements |
min_delete_elapse | bigint | Minimum response time of DELETE statements |
total_insert_elapse | bigint | Total response time of INSERT statements |
avg_insert_elapse | bigint | Average response time of INSERT statements |
max_insert_elapse | bigint | Maximum response time of INSERT statements |
min_insert_elapse | bigint | Minimum response time of INSERT statements |