SUMMARY_STATEMENT

SUMMARY_STATEMENT obtains all information about execution statements (normalized SQL statements) on the primary database node and other database nodes.

Table 1 SUMMARY_STATEMENT columns

Name	Type	Description
node_name	name	Database process name
node_id	integer	ID of a 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
n_hard_parse	bigint	Number of hard parsing times
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)
last_updated	timestamp with time zone	Last time when the statement was updated
sort_count	bigint	Sorting count
sort_time	bigint	Sorting duration (unit: μs)
sort_mem_used	bigint	Size of work memory used during sorting (unit: KB)
sort_spill_count	bigint	Count of file writing when data is flushed to disks during sorting
sort_spill_size	bigint	File size used when data is flushed to disks during sorting (unit: KB)
hash_count	bigint	Hashing count
hash_time	bigint	Hashing duration (unit: μs)
hash_mem_used	bigint	Size of work memory used during hashing (unit: KB)
hash_spill_count	bigint	Count of file writing when data is flushed to disks during hashing
hash_spill_size	bigint	File size used when data is flushed to disks during hashing (unit: KB)