1 files changed, 1 insertions, 70 deletions
diff --git a/src/backend/executor/execAmi.c b/src/backend/executor/execAmi.c
index b637b5a08f2..154301a67f9 100644
--- a/src/backend/executor/execAmi.c
+++ b/src/backend/executor/execAmi.c
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	$PostgreSQL: pgsql/src/backend/executor/execAmi.c,v 1.95 2008/07/10 01:17:29 tgl Exp $
+ *	$PostgreSQL: pgsql/src/backend/executor/execAmi.c,v 1.96 2008/07/26 19:15:35 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -424,72 +424,3 @@ ExecSupportsBackwardScan(Plan *node)
 			return false;
 	}
 }
-
-/*
- * ExecMayReturnRawTuples
- *		Check whether a plan tree may return "raw" disk tuples (that is,
- *		pointers to original data in disk buffers, as opposed to temporary
- *		tuples constructed by projection steps).  In the case of Append,
- *		some subplans may return raw tuples and others projected tuples;
- *		we return "true" if any of the returned tuples could be raw.
- *
- * This must be passed an already-initialized planstate tree, because we
- * need to look at the results of ExecAssignScanProjectionInfo().
- */
-bool
-ExecMayReturnRawTuples(PlanState *node)
-{
-	/*
-	 * At a table scan node, we check whether ExecAssignScanProjectionInfo
-	 * decided to do projection or not.  Most non-scan nodes always project
-	 * and so we can return "false" immediately.  For nodes that don't project
-	 * but just pass up input tuples, we have to recursively examine the input
-	 * plan node.
-	 *
-	 * Note: Hash and Material are listed here because they sometimes return
-	 * an original input tuple, not a copy.  But Sort and SetOp never return
-	 * an original tuple, so they can be treated like projecting nodes.
-	 */
-	switch (nodeTag(node))
-	{
-			/* Table scan nodes */
-		case T_SeqScanState:
-		case T_IndexScanState:
-		case T_BitmapHeapScanState:
-		case T_TidScanState:
-			if (node->ps_ProjInfo == NULL)
-				return true;
-			break;
-
-		case T_SubqueryScanState:
-			/* If not projecting, look at input plan */
-			if (node->ps_ProjInfo == NULL)
-				return ExecMayReturnRawTuples(((SubqueryScanState *) node)->subplan);
-			break;
-
-			/* Non-projecting nodes */
-		case T_HashState:
-		case T_MaterialState:
-		case T_UniqueState:
-		case T_LimitState:
-			return ExecMayReturnRawTuples(node->lefttree);
-
-		case T_AppendState:
-			{
-				AppendState *appendstate = (AppendState *) node;
-				int			j;
-
-				for (j = 0; j < appendstate->as_nplans; j++)
-				{
-					if (ExecMayReturnRawTuples(appendstate->appendplans[j]))
-						return true;
-				}
-				break;
-			}
-
-			/* All projecting node types come here */
-		default:
-			break;
-	}
-	return false;
-}