From bec98a31c55a4f799b398d01541e68d7c086bb81 Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Mon, 17 Jul 2000 03:05:41 +0000
Subject: Revise aggregate functions per earlier discussions in pghackers.
 There's now only one transition value and transition function. NULL handling
 in aggregates is a lot cleaner.  Also, use Numeric accumulators instead of
 integer accumulators for sum/avg on integer datatypes --- this avoids
 overflow at the cost of being a little slower. Implement VARIANCE() and
 STDDEV() aggregates in the standard backend.

Also, enable new LIKE selectivity estimators by default.  Unrelated
change, but as long as I had to force initdb anyway...
---
 src/include/nodes/primnodes.h | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

(limited to 'src/include/nodes')

diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h
index 6f675873cc8..2cf59ca50c2 100644
--- a/src/include/nodes/primnodes.h
+++ b/src/include/nodes/primnodes.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: primnodes.h,v 1.43 2000/06/12 19:40:49 momjian Exp $
+ * $Id: primnodes.h,v 1.44 2000/07/17 03:05:27 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -301,10 +301,9 @@ typedef struct Iter
  *		basetype		- base type Oid of the aggregate (ie, input type)
  *		aggtype			- type Oid of final result of the aggregate
  *		target			- attribute or expression we are aggregating on
- *		usenulls		- TRUE to accept null values as inputs
  *		aggstar			- TRUE if argument was really '*'
- *		aggdistinct		- TRUE if arguments were labeled DISTINCT
- *		aggno			- workspace for nodeAgg.c executor
+ *		aggdistinct		- TRUE if it's agg(DISTINCT ...)
+ *		aggno			- workspace for executor (see nodeAgg.c)
  * ----------------
  */
 typedef struct Aggref
@@ -314,7 +313,6 @@ typedef struct Aggref
 	Oid			basetype;
 	Oid			aggtype;
 	Node	   *target;
-	bool		usenulls;
 	bool		aggstar;
 	bool		aggdistinct;
 	int			aggno;
-- 
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