From fc0ee062aafa5ec800dc0461387c3b01ca3d85ec Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Tue, 25 Sep 2007 22:21:55 +0000
Subject: Change on-disk representation of NUMERIC datatype so that the
 sign_dscale word comes before the weight instead of after.  This will allow
 future binary-compatible extension of the representation to support compact
 formats, as discussed on pgsql-hackers around 2007/06/18.  The reason to do
 it now is that we've already pretty well broken any chance of simple in-place
 upgrade from 8.2 to 8.3, but it's possible that 8.3 to 8.4 (or whenever we
 get around to squeezing NUMERIC) could otherwise be data-compatible.

---
 src/include/catalog/catversion.h | 2 +-
 src/include/utils/numeric.h      | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index 31421abb94..3a897c72bb 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	200709241
+#define CATALOG_VERSION_NO	200709251
 
 #endif
diff --git a/src/include/utils/numeric.h b/src/include/utils/numeric.h
index 3e02c40b16..589e2f5bda 100644
--- a/src/include/utils/numeric.h
+++ b/src/include/utils/numeric.h
@@ -63,14 +63,14 @@
 typedef struct NumericData
 {
 	int32		vl_len_;		/* varlena header (do not touch directly!) */
-	int16		n_weight;		/* Weight of 1st digit	*/
 	uint16		n_sign_dscale;	/* Sign + display scale */
+	int16		n_weight;		/* Weight of 1st digit	*/
 	char		n_data[1];		/* Digits (really array of NumericDigit) */
 } NumericData;
 
 typedef NumericData *Numeric;
 
-#define NUMERIC_HDRSZ	(VARHDRSZ + sizeof(int16) + sizeof(uint16))
+#define NUMERIC_HDRSZ	(VARHDRSZ + sizeof(uint16) + sizeof(int16))
 
 
 /*
-- 
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