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On second thought, disable parallelism for prepared statements.

CREATE TABLE .. AS EXECUTE can turn an apparently read-only query intoa write operation, which parallel query can't handle. It's a bit of ashame that requires us to avoid parallel query for queries prepared viaPREPARE in all cases, but for right now it does.

1 parent35746bc commit7bea19dCopy full SHA for 7bea19d

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src/backend/commands
- prepare.c

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`‎src/backend/commands/prepare.c`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -159,7 +159,7 @@ PrepareQuery(PrepareStmt stmt, const char queryString)`
`159`	`159`	`nargs,`
`160`	`160`	`NULL,`
`161`	`161`	`NULL,`
`162`		`-CURSOR_OPT_PARALLEL_OK,/allow parallel mode /`
	`162`	`+0,/default cursor options /`
`163`	`163`	`true);/* fixed result */`
`164`	`164`
`165`	`165`	`/*`

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Commit7bea19d

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1 file changed

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`‎src/backend/commands/prepare.c`

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