43.25. pg_rewrite

The catalog pg_rewrite stores rewrite rules for tables and views.

Table 43-25. pg_rewrite Columns

NameTypeReferencesDescription
rulenamename Rule name
ev_classoidpg_class.oidThe table this rule is for
ev_attrint2 The column this rule is for (currently, always zero to indicate the whole table)
ev_typechar  Event type that the rule is for: 1 = SELECT, 2 = UPDATE, 3 = INSERT, 4 = DELETE
is_insteadbool True if the rule is an INSTEAD rule
ev_qualtext  Expression tree (in the form of a nodeToString() representation) for the rule's qualifying condition
ev_actiontext  Query tree (in the form of a nodeToString() representation) for the rule's action

Note: pg_class.relhasrules must be true if a table has any rules in this catalog.

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