fix PartitionFilter (due to latest changes)

funbringer · funbringer · commit 09d9331f3698 · 2017-05-31T19:57:38.000+03:00
diff --git a/src/partition_filter.c b/src/partition_filter.c
@@ -560,6 +560,9 @@ partition_filter_begin(CustomScanState *node, EState *estate, int eflags)
 		}
 		expr = PrelExpressionForRelid(prel, parent_varno);
 
+		/* HACK: protect expression from 'prel' invalidation */
+		expr = copyObject(expr);
+
 		/* Prepare state for expression execution */
 		old_mcxt = MemoryContextSwitchTo(estate->es_query_cxt);
 		state->expr_state = ExecInitExpr((Expr *) expr, NULL);

Original file line number	Diff line number	Diff line change
`@@ -560,6 +560,9 @@ partition_filter_begin(CustomScanState node, EState estate, int eflags)`
`560`	`560`	`}`
`561`	`561`	`expr = PrelExpressionForRelid(prel, parent_varno);`
`562`	`562`
	`563`	`+ /* HACK: protect expression from 'prel' invalidation */`
	`564`	`+ expr = copyObject(expr);`
	`565`	`+`
`563`	`566`	`/* Prepare state for expression execution */`
`564`	`567`	`old_mcxt = MemoryContextSwitchTo(estate->es_query_cxt);`
`565`	`568`	`state->expr_state = ExecInitExpr((Expr *) expr, NULL);`