pg_rewrite stores rewrite rules for tables and views.
| || ||Row identifier (hidden attribute; must be explicitly selected)|
| || ||Rule name|
| || || ||The table this rule is for|
| || ||Event type that the rule is for: 1 = |
| || ||Controls in which session_replication_role modes the rule fires. |
| || ||True if the rule is an |
| || ||Expression tree (in the form of a |
| || ||Query tree (in the form of a |
pg_class.relhasrulesmust be true if a table has any rules in this catalog.
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