From 37e2a03a61d04c7a8102d93568ad0ab418f0ff67 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Thu, 1 Sep 2016 10:15:12 +0800
Subject: [PATCH] resolved #445: sum returned error when no condition matched

---
 VERSION      | 2 +-
 statement.go | 2 +-
 xorm.go      | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/VERSION b/VERSION
index 871cfe02..c9ec25d0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-xorm v0.5.5.0822
+xorm v0.5.5.0901
diff --git a/statement.go b/statement.go
index 8119d8a2..8fee89d7 100644
--- a/statement.go
+++ b/statement.go
@@ -1219,7 +1219,7 @@ func (statement *Statement) genSumSql(bean interface{}, columns ...string) (stri
 	statement.attachInSql()
 	var sumStrs = make([]string, 0, len(columns))
 	for _, colName := range columns {
-		sumStrs = append(sumStrs, fmt.Sprintf("sum(%s)", colName))
+		sumStrs = append(sumStrs, fmt.Sprintf("COALESCE(sum(%s),0)", colName))
 	}
 	return statement.genSelectSQL(strings.Join(sumStrs, ", ")), append(append(append(statement.joinArgs, statement.Params...),
 		statement.BeanArgs...), statement.inParams...)
diff --git a/xorm.go b/xorm.go
index 7c2461b6..dda4a001 100644
--- a/xorm.go
+++ b/xorm.go
@@ -17,7 +17,7 @@ import (
 
 const (
 	// Version show the xorm's version
-	Version string = "0.5.5.0822"
+	Version string = "0.5.5.0901"
 )
 
 func regDrvsNDialects() bool {