STATEMENT

STATEMENT obtains information about execution statements (normalized SQL statements) on the current node. You can view all statistics about normalized SQL statements received by the primary database node and other database nodes, whereas you can view only the statistics about normalized SQL statements executed on other database nodes.

Table 1 STATEMENT columns

Name	Type	Description
node_name	name	Database process name
node_id	integer	Node ID (node_id in pgxc_node)
user_name	name	Username
user_id	oid	OID of the user
unique_sql_id	bigint	ID of the normalized SQL statement
query	text	Normalized SQL statement
n_calls	bigint	Number of calls
min_elapse_time	bigint	Minimum execution time of the SQL statement in the kernel (unit: μs)
max_elapse_time	bigint	Maximum execution time of the SQL statement in the kernel (unit: μs)
total_elapse_time	bigint	Total execution time of the SQL statement in the kernel (unit: μs)
n_returned_rows	bigint	Number of rows in the result set returned by the SELECT statement
n_tuples_fetched	bigint	Number of rows randomly scanned
n_tuples_returned	bigint	Number of rows sequentially scanned
n_tuples_inserted	bigint	Number of rows inserted
n_tuples_updated	bigint	Number of rows updated
n_tuples_deleted	bigint	Number of rows deleted
n_blocks_fetched	bigint	Number of buffer block access times
n_blocks_hit	bigint	Number of buffer block hits
n_soft_parse	bigint	Number of soft parsing times. The value of n_soft_parse plus the value of n_hard_parse may be greater than the value of n_calls because the number of subqueries is not counted in the value of n_calls.
n_hard_parse	bigint	Number of hard parsing times. The value of n_soft_parse plus the value of n_hard_parse may be greater than the value of n_calls because the number of subqueries is not counted in the value of n_calls.
db_time	bigint	Valid DB time, which is accumulated if multiple threads are involved (unit: μs)
cpu_time	bigint	CPU time (unit: μs)
execution_time	bigint	Execution time in the executor (unit: μs)
parse_time	bigint	SQL parsing time (unit: μs)
plan_time	bigint	SQL plan generation time (unit: μs)
rewrite_time	bigint	SQL rewriting time (unit: μs)
pl_execution_time	bigint	Execution time of PL/pgSQL (unit: μs)
pl_compilation_time	bigint	Compilation time of PL/pgSQL (unit: μs)
net_send_time	bigint	Network time (unit: μs)
data_io_time	bigint	I/O time (unit: μs)