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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 18:38:17 -05:00
parent 24ace4053d
commit be420fa02e
3 changed files with 14 additions and 1 deletions
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3
src/backend/executor/execMain.c
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@ -865,7 +865,8 @@ InitPlan(QueryDesc *queryDesc, int eflags)
* it is a parameterless subplan (not initplan), we suggest that it be * it is a parameterless subplan (not initplan), we suggest that it be
* prepared to handle REWIND efficiently; otherwise there is no need. * 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)) if (bms_is_member(i, plannedstmt->rewindPlanIDs))
sp_eflags |= EXEC_FLAG_REWIND; sp_eflags |= EXEC_FLAG_REWIND;

6
src/test/regress/expected/matview.out
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@ -424,6 +424,12 @@ REFRESH MATERIALIZED VIEW mv;
REFRESH MATERIALIZED VIEW CONCURRENTLY mv; REFRESH MATERIALIZED VIEW CONCURRENTLY mv;
DROP TABLE foo CASCADE; DROP TABLE foo CASCADE;
NOTICE: drop cascades to materialized view mv NOTICE: drop cascades to materialized view mv
-- 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
-- make sure that types with unusual equality tests work -- make sure that types with unusual equality tests work
CREATE TABLE boxes (id serial primary key, b box); CREATE TABLE boxes (id serial primary key, b box);
INSERT INTO boxes (b) VALUES INSERT INTO boxes (b) VALUES

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

@ -155,6 +155,12 @@ REFRESH MATERIALIZED VIEW mv;
REFRESH MATERIALIZED VIEW CONCURRENTLY mv; REFRESH MATERIALIZED VIEW CONCURRENTLY mv;
DROP TABLE foo CASCADE; DROP TABLE foo 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;
-- make sure that types with unusual equality tests work -- make sure that types with unusual equality tests work
CREATE TABLE boxes (id serial primary key, b box); CREATE TABLE boxes (id serial primary key, b box);
INSERT INTO boxes (b) VALUES INSERT INTO boxes (b) VALUES