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Fix subquery reference to non-populated MV in CMV.

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A subquery reference to a matview should be allowed by CREATE
MATERIALIZED VIEW WITH NO DATA, just like a direct reference is.

Per bug report from Laurent Sartran.

Backpatch to 9.3.
This commit is contained in:
Kevin Grittner
2013-11-02 18:31:41 -05:00
parent 86dab9c8ad
commit b2cd72cbbd
3 changed files with 14 additions and 1 deletions
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3
src/backend/executor/execMain.c
View File

@ -864,7 +864,8 @@ InitPlan(QueryDesc *queryDesc, int eflags)
* it is a parameterless subplan (not initplan), we suggest that it be
* prepared to handle REWIND efficiently; otherwise there is no need.
*/
sp_eflags = eflags & EXEC_FLAG_EXPLAIN_ONLY;
sp_eflags = eflags
& (EXEC_FLAG_EXPLAIN_ONLY | EXEC_FLAG_WITH_NO_DATA);
if (bms_is_member(i, plannedstmt->rewindPlanIDs))
sp_eflags |= EXEC_FLAG_REWIND;

6
src/test/regress/expected/matview.out
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@ -385,3 +385,9 @@ SELECT * FROM hogeview WHERE i < 10;
DROP TABLE hoge CASCADE;
NOTICE: drop cascades to materialized view hogeview
-- allow subquery to reference unpopulated matview if WITH NO DATA is specified
CREATE MATERIALIZED VIEW mv1 AS SELECT 1 AS col1 WITH NO DATA;
CREATE MATERIALIZED VIEW mv2 AS SELECT * FROM mv1
WHERE col1 = (SELECT LEAST(col1) FROM mv1) WITH NO DATA;
DROP MATERIALIZED VIEW mv1 CASCADE;
NOTICE: drop cascades to materialized view mv2

6
src/test/regress/sql/matview.sql
View File

@ -124,3 +124,9 @@ SELECT * FROM hogeview WHERE i < 10;
VACUUM ANALYZE;
SELECT * FROM hogeview WHERE i < 10;
DROP TABLE hoge CASCADE;
-- allow subquery to reference unpopulated matview if WITH NO DATA is specified
CREATE MATERIALIZED VIEW mv1 AS SELECT 1 AS col1 WITH NO DATA;
CREATE MATERIALIZED VIEW mv2 AS SELECT * FROM mv1
WHERE col1 = (SELECT LEAST(col1) FROM mv1) WITH NO DATA;
DROP MATERIALIZED VIEW mv1 CASCADE;