First pass at set-returning-functions in FROM, by Joe Conway with

some kibitzing from Tom Lane.  Not everything works yet, and there's
no documentation or regression test, but let's commit this so Joe
doesn't need to cope with tracking changes in so many files ...

1 files changed, 20 insertions, 1 deletions

diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c
index c86ee450082..07d05b38a87 100644
--- a/src/backend/optimizer/util/pathnode.c
+++ b/src/backend/optimizer/util/pathnode.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.76 2001/10/25 05:49:34 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.77 2002/05/12 20:10:03 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -455,6 +455,25 @@ create_subqueryscan_path(RelOptInfo *rel)
 }
 
 /*
+ * create_functionscan_path
+ *	  Creates a path corresponding to a sequential scan of a function,
+ *	  returning the pathnode.
+ */
+Path *
+create_functionscan_path(Query *root, RelOptInfo *rel)
+{
+	Path	   *pathnode = makeNode(Path);
+
+	pathnode->pathtype = T_FunctionScan;
+	pathnode->parent = rel;
+	pathnode->pathkeys = NIL;	/* for now, assume unordered result */
+
+	cost_functionscan(pathnode, root, rel);
+
+	return pathnode;
+}
+
+/*
  * create_nestloop_path
  *	  Creates a pathnode corresponding to a nestloop join between two
  *	  relations.