PLAN_TABLE
PLAN_TABLE displays plan information collected by EXPLAIN PLAN. Plan information is in a session-level lifecycle. After a session exits, the data will be deleted. Data is isolated between sessions and between users.
Table 1 PLAN_TABLE columns
Object name corresponding to the operation, which is not the object alias used in the query. The object name is defined by users. | ||
NOTE:
- A valid object_type value consists of a relkind type defined in PG_CLASS (TABLE, INDEX, SEQUENCE, VIEW, COMPOSITE TYPE, or TOASTVALUE TOAST) and the rtekind type used in the plan (SUBQUERY, JOIN, FUNCTION, VALUES, CTE, or REMOTE_QUERY).
- For RangeTableEntry (RTE), object_owner is the object description used in the plan. Non-user-defined objects do not have object_owner.
- Information in the statement_id, object_name, object_owner, and projection columns is stored in letter cases specified by users and information in other columns is stored in uppercase.
- PLAN_TABLE supports only SELECT and DELETE and does not support other DML operations.
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