Function PreventCommandIfParallelMode

src/backend/tcop/utility.c:492–501

* PreventCommandIfParallelMode: throw error if current (sub)transaction is * in parallel mode. * * This is useful partly to ensure consistency of the error message wording; * some callers have checked IsInParallelMode() for themselves. */

 * some callers have checked IsInParallelMode() for themselves.
 */
void
PreventCommandIfParallelMode(const char *cmdname)
{
	if (IsInParallelMode())
		ereport(ERROR,
				(errcode(ERRCODE_INVALID_TRANSACTION_STATE),
		/* translator: %s is name of a SQL command, eg CREATE */
				 errmsg("cannot execute %s during a parallel operation",
						cmdname)));
}

/*
 * PreventCommandDuringRecovery: throw error if RecoveryInProgress