PG_PLAN_BASELINE

Records the binding relationships between statements and plans. A statement can be bound to only one plan. This system catalog is supported by only the 8.2.1.200 cluster version.

**Table 1** PG_PLAN_BASELINE columns
Column	Type	Description
sql_hash	text	sql_hash of the statement
outline_name	text	Name of the outline bound to the SQL statement corresponding to the sql_hash
plan_baseline	name	Baseline name of the binding relationship.
create_time	timestamp with time zone	Time when the plan binding task is created
last_modify_time	timestamp with time zone	Last modification time, that is, the time when the statement was bound to the plan for the last time.
last_execute_time	timestamp with time zone	Last used time. This column is reserved.
apply_skew_hint	boolean	Whether to apply skew hints in outlines. This column is supported by cluster 9.1.0 and later versions.