From ede84cde60a754dff47dc8cc83ae5fc61692c801 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Tue, 3 Mar 2015 15:14:44 +0800
Subject: [PATCH] bug fixed

---
 session.go   | 2 +-
 statement.go | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/session.go b/session.go
index cf566902..4c414209 100644
--- a/session.go
+++ b/session.go
@@ -3367,7 +3367,7 @@ func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int6
 		if session.Statement.ColumnStr == "" {
 			colNames, args = buildUpdates(session.Engine, table, bean, false, false,
 				false, false, session.Statement.allUseBool, session.Statement.useAllCols,
-				session.Statement.mustColumnMap, true)
+				session.Statement.mustColumnMap, session.Statement.columnMap, true)
 		} else {
 			colNames, args, err = genCols(table, session, bean, true, true)
 			if err != nil {
diff --git a/statement.go b/statement.go
index f645a1d3..74a21e1e 100644
--- a/statement.go
+++ b/statement.go
@@ -286,7 +286,7 @@ func (statement *Statement) Table(tableNameOrBean interface{}) *Statement {
 func buildUpdates(engine *Engine, table *core.Table, bean interface{},
 	includeVersion bool, includeUpdated bool, includeNil bool,
 	includeAutoIncr bool, allUseBool bool, useAllCols bool,
-	mustColumnMap map[string]bool, update bool) ([]string, []interface{}) {
+	mustColumnMap map[string]bool, columnMap map[string]bool, update bool) ([]string, []interface{}) {
 
 	colNames := make([]string, 0)
 	var args = make([]interface{}, 0)
@@ -306,6 +306,9 @@ func buildUpdates(engine *Engine, table *core.Table, bean interface{},
 		if col.IsDeleted {
 			continue
 		}
+		if use, ok := columnMap[col.Name]; ok && !use {
+			continue
+		}
 
 		if engine.dialect.DBType() == core.MSSQL && col.SQLType.Name == core.Text {
 			continue