From 97f4b0e45c60a37336fcb19ee54cb7ca882e0014 Mon Sep 17 00:00:00 2001
From: unphp <unphp@qq.com>
Date: Tue, 15 Apr 2014 09:54:49 +0800
Subject: [PATCH 1/4] Method In provides a update string

---
 engine.go    |  5 +++++
 session.go   | 12 ++++++++++++
 statement.go | 12 ++++++++++++
 3 files changed, 29 insertions(+)

diff --git a/engine.go b/engine.go
index 33595aa9..e0a10ed1 100644
--- a/engine.go
+++ b/engine.go
@@ -342,6 +342,11 @@ func (engine *Engine) In(column string, args ...interface{}) *Session {
 	session := engine.NewSession()
 	session.IsAutoClose = true
 	return session.In(column, args...)
+// Method In provides a update string like "column = column + ?"
+func (engine *Engine) Inc(column string, arg interface{}) *Session {
+	session := engine.NewSession()
+	session.IsAutoClose = true
+	return session.Inc(column, arg)
 }
 
 // Temporarily change the Get, Find, Update's table
diff --git a/session.go b/session.go
index c94e89aa..741f9342 100644
--- a/session.go
+++ b/session.go
@@ -128,6 +128,12 @@ func (session *Session) In(column string, args ...interface{}) *Session {
 	return session
 }
 
+// Method In provides a query string like "count = count + 1"
+func (session *Session) Inc(column string, arg interface{}) *Session {
+	session.Statement.Inc(column, arg)
+	return session
+}
+
 // Method Cols provides some columns to special
 func (session *Session) Cols(columns ...string) *Session {
 	session.Statement.Cols(columns...)
@@ -2952,6 +2958,12 @@ func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int6
 		args = append(args, time.Now())
 	}
 
+	//for update action to like "column = column + ?"
+	incColumns := session.Statement.getInc()
+	for k, v := range incColumns {
+		colNames = append(colNames, k+" = "+k+" + ?")
+		args = append(args, v)
+	}
 	var condiColNames []string
 	var condiArgs []interface{}
 
diff --git a/statement.go b/statement.go
index fa82ff83..0b0c2f83 100644
--- a/statement.go
+++ b/statement.go
@@ -48,6 +48,7 @@ type Statement struct {
 	checkVersion  bool
 	mustColumnMap map[string]bool
 	inColumns     map[string]*inParam
+	incColumns    map[string]interface{}
 }
 
 // init
@@ -470,6 +471,17 @@ func (statement *Statement) Id(id interface{}) *Statement {
 	return statement
 }
 
+// Generate  "Update ... Set column = column + arg" statment
+func (statement *Statement) Inc(column string, arg interface{}) *Statement {
+	k := strings.ToLower(column)
+	statement.incColumns[k] = arg
+	return statement
+}
+
+// Generate  "Update ... Set column = column + arg" statment
+func (statement *Statement) getInc() map[string]interface{} {
+	return statement.incColumns
+}
 // Generate "Where column IN (?) " statment
 func (statement *Statement) In(column string, args ...interface{}) *Statement {
 	k := strings.ToLower(column)

From decbeefc27810dcf4d9d771ad88d20ceb37c65ac Mon Sep 17 00:00:00 2001
From: unphp <unphp@qq.com>
Date: Tue, 15 Apr 2014 09:58:31 +0800
Subject: [PATCH 2/4] Method In provides a update string

---
 engine.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/engine.go b/engine.go
index e0a10ed1..7e562eb5 100644
--- a/engine.go
+++ b/engine.go
@@ -342,6 +342,8 @@ func (engine *Engine) In(column string, args ...interface{}) *Session {
 	session := engine.NewSession()
 	session.IsAutoClose = true
 	return session.In(column, args...)
+}
+
 // Method In provides a update string like "column = column + ?"
 func (engine *Engine) Inc(column string, arg interface{}) *Session {
 	session := engine.NewSession()

From 64e5181112d4d583be92d7ebd327884c82d35d7e Mon Sep 17 00:00:00 2001
From: unphp <unphp@qq.com>
Date: Tue, 15 Apr 2014 10:24:59 +0800
Subject: [PATCH 3/4] Method In provides a update string

---
 statement.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/statement.go b/statement.go
index 0b0c2f83..5b45d1d6 100644
--- a/statement.go
+++ b/statement.go
@@ -79,6 +79,7 @@ func (statement *Statement) Init() {
 	statement.mustColumnMap = make(map[string]bool)
 	statement.checkVersion = true
 	statement.inColumns = make(map[string]*inParam)
+	statement.incColumns = make(map[string]interface{}, 0)
 }
 
 // add the raw sql statement
@@ -482,6 +483,7 @@ func (statement *Statement) Inc(column string, arg interface{}) *Statement {
 func (statement *Statement) getInc() map[string]interface{} {
 	return statement.incColumns
 }
+
 // Generate "Where column IN (?) " statment
 func (statement *Statement) In(column string, args ...interface{}) *Statement {
 	k := strings.ToLower(column)

From e2aa0ef2c2ecd90e43f46812dbf18e38587a85fb Mon Sep 17 00:00:00 2001
From: unphp <unphp@qq.com>
Date: Tue, 15 Apr 2014 10:28:58 +0800
Subject: [PATCH 4/4] Method In provides a update string

---
 engine.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/engine.go b/engine.go
index 7e562eb5..63a353c5 100644
--- a/engine.go
+++ b/engine.go
@@ -344,7 +344,7 @@ func (engine *Engine) In(column string, args ...interface{}) *Session {
 	return session.In(column, args...)
 }
 
-// Method In provides a update string like "column = column + ?"
+// Method Inc provides a update string like "column = column + ?"
 func (engine *Engine) Inc(column string, arg interface{}) *Session {
 	session := engine.NewSession()
 	session.IsAutoClose = true