24dc053659
Previously, IMMV including IMMV in its definition can be created by create_immv(), but it should not be supported by IMMV because we cannot maintain it recursively for now. This patch prevents it by raising an error for such view definition on create_immv().
54 lines
1.8 KiB
Text
54 lines
1.8 KiB
Text
CREATE TABLE t (i int PRIMARY KEY);
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INSERT INTO t SELECT generate_series(1, 100);
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SELECT create_immv('mv', 'SELECT * FROM t');
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NOTICE: created index "mv_index" on immv "mv"
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create_immv
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-------------
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100
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(1 row)
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SELECT create_immv(' mv2 ( x ) ', 'SELECT * FROM t WHERE i%2 = 0');
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NOTICE: created index "mv2_index" on immv "mv2"
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create_immv
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-------------
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50
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(1 row)
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SELECT create_immv('mv3', 'WITH d AS (DELETE FROM t RETURNING NULL) SELECT * FROM t');
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ERROR: materialized views must not use data-modifying statements in WITH
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SELECT immvrelid, get_immv_def(immvrelid) FROM pg_ivm_immv ORDER BY 1;
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immvrelid | get_immv_def
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-----------+-----------------------
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mv | SELECT i +
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| FROM t
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mv2 | SELECT i AS x +
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| FROM t +
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| WHERE ((i % 2) = 0)
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(2 rows)
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-- contain immv
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SELECT create_immv('mv_in_immv01', 'SELECT i FROM mv');
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ERROR: including IMMV in definition is not supported on incrementally maintainable materialized view
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SELECT create_immv('mv_in_immv02', 'SELECT t.i FROM t INNER JOIN mv2 ON t.i = mv2.x');
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ERROR: including IMMV in definition is not supported on incrementally maintainable materialized view
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DROP TABLE t;
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ERROR: cannot drop table t because other objects depend on it
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DETAIL: table mv depends on table t
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table mv2 depends on table t
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HINT: Use DROP ... CASCADE to drop the dependent objects too.
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DROP TABLE mv;
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SELECT immvrelid, get_immv_def(immvrelid) FROM pg_ivm_immv ORDER BY 1;
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immvrelid | get_immv_def
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-----------+-----------------------
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mv2 | SELECT i AS x +
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| FROM t +
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| WHERE ((i % 2) = 0)
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(1 row)
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DROP TABLE mv2;
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SELECT immvrelid, get_immv_def(immvrelid) FROM pg_ivm_immv ORDER BY 1;
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immvrelid | get_immv_def
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-----------+--------------
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(0 rows)
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DROP TABLE t;
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