Support window functions a la SQL:2008.

Hitoshi Harada, with some kibitzing from Heikki and Tom.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/include/executor/nodeWindowAgg.h b/src/include/executor/nodeWindowAgg.h
new file mode 100644
index 00000000000..e8531037c07
--- /dev/null
+++ b/src/include/executor/nodeWindowAgg.h
@@ -0,0 +1,25 @@
+/*-------------------------------------------------------------------------
+ *
+ * nodeWindowAgg.h
+ *	  prototypes for nodeWindowAgg.c
+ *
+ *
+ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * $PostgreSQL: pgsql/src/include/executor/nodeWindowAgg.h,v 1.1 2008/12/28 18:54:00 tgl Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef NODEWINDOWAGG_H
+#define NODEWINDOWAGG_H
+
+#include "nodes/execnodes.h"
+
+extern int	ExecCountSlotsWindowAgg(WindowAgg *node);
+extern WindowAggState *ExecInitWindowAgg(WindowAgg *node, EState *estate, int eflags);
+extern TupleTableSlot *ExecWindowAgg(WindowAggState *node);
+extern void ExecEndWindowAgg(WindowAggState *node);
+extern void ExecReScanWindowAgg(WindowAggState *node, ExprContext *exprCtxt);
+
+#endif   /* NODEWINDOWAGG_H */