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321eed5f0f
Other options cannot be changed, as it's not totally clear if cached plans would need to be invalidated if one of the other options change. Selectivity estimator functions only change plan costs, not correctness of plans, so those should be safe. Original patch by Uriy Zhuravlev, heavily edited by me.
65 lines
2.0 KiB
PL/PgSQL
65 lines
2.0 KiB
PL/PgSQL
CREATE OR REPLACE FUNCTION alter_op_test_fn(boolean, boolean)
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RETURNS boolean AS $$ SELECT NULL::BOOLEAN; $$ LANGUAGE sql IMMUTABLE;
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CREATE OPERATOR === (
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LEFTARG = boolean,
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RIGHTARG = boolean,
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PROCEDURE = alter_op_test_fn,
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COMMUTATOR = ===,
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NEGATOR = !==,
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RESTRICT = contsel,
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JOIN = contjoinsel,
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HASHES, MERGES
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);
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--
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-- Reset and set params
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--
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = NONE);
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ALTER OPERATOR === (boolean, boolean) SET (JOIN = NONE);
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SELECT oprrest, oprjoin FROM pg_operator WHERE oprname = '==='
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AND oprleft = 'boolean'::regtype AND oprright = 'boolean'::regtype;
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = contsel);
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ALTER OPERATOR === (boolean, boolean) SET (JOIN = contjoinsel);
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SELECT oprrest, oprjoin FROM pg_operator WHERE oprname = '==='
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AND oprleft = 'boolean'::regtype AND oprright = 'boolean'::regtype;
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = NONE, JOIN = NONE);
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SELECT oprrest, oprjoin FROM pg_operator WHERE oprname = '==='
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AND oprleft = 'boolean'::regtype AND oprright = 'boolean'::regtype;
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = contsel, JOIN = contjoinsel);
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SELECT oprrest, oprjoin FROM pg_operator WHERE oprname = '==='
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AND oprleft = 'boolean'::regtype AND oprright = 'boolean'::regtype;
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--
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-- Test invalid options.
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--
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ALTER OPERATOR === (boolean, boolean) SET (COMMUTATOR = ====);
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ALTER OPERATOR === (boolean, boolean) SET (NEGATOR = ====);
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = non_existent_func);
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ALTER OPERATOR === (boolean, boolean) SET (JOIN = non_existent_func);
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ALTER OPERATOR === (boolean, boolean) SET (COMMUTATOR = !==);
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ALTER OPERATOR === (boolean, boolean) SET (NEGATOR = !==);
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--
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-- Test permission check. Must be owner to ALTER OPERATOR.
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--
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CREATE USER regtest_alter_user;
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SET SESSION AUTHORIZATION regtest_alter_user_user;
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ALTER OPERATOR === (boolean, boolean) SET (RESTRICT = NONE);
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RESET SESSION AUTHORIZATION;
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-- Clean up
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DROP USER regression_alter_user;
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DROP OPERATOR === (boolean, boolean);
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