GS_SLOW_QUERY_INFO

GS_SLOW_QUERY_INFO displays the slow query information that has been dumped on the current node. Data is dumped from the kernel to this system catalog. If the GUC parameter enable_resource_record is set to on, the system imports the query information from the kernel to GS_WLM_SESSION_QUERY_INFO_ALL every 3 minutes. This operation occupies storage space and affects performance. You can check GS_SLOW_QUERY_INFO to view the slow query information that has been dumped. This view has been discarded in this version.

**Table 1** GS_SLOW_QUERY_INFO columns
Name	Type	Description
dbname	text	Database name
schemaname	text	Schema name
nodename	text	Node name
username	text	Username
queryid	bigint	Normalization ID
query	text	Query statement
start_time	timestamp with time zone	Execution start time
finish_time	timestamp with time zone	Execution end time
duration	bigint	Execution duration (unit: ms)
query_plan	text	Plan information
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 cache loading times
n_blocks_hit	bigint	Cache hits
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)