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On second thought, disable parallelism for prepared statements.

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CREATE TABLE .. AS EXECUTE can turn an apparently read-only query into
a write operation, which parallel query can't handle.  It's a bit of a
shame that requires us to avoid parallel query for queries prepared via
PREPARE in all cases, but for right now it does.
This commit is contained in:
Robert Haas 2016-02-26 16:33:37 +05:30
parent 35746bc348
commit 7bea19d0a9
1 changed files with 1 additions and 1 deletions

2
src/backend/commands/prepare.c

@ -159,7 +159,7 @@ PrepareQuery(PrepareStmt *stmt, const char *queryString)
nargs,
NULL,
NULL,
CURSOR_OPT_PARALLEL_OK, /* allow parallel mode */
0, /* default cursor options */
true); /* fixed result */
/*