diff --git a/VERSION b/VERSION
index 40bc6907..8c5fb856 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-xorm v0.5.0.0216
+xorm v0.5.1.0228
diff --git a/session.go b/session.go
index 39c6a92a..d05456c8 100644
--- a/session.go
+++ b/session.go
@@ -1240,7 +1240,7 @@ func (session *Session) Find(rowsSlicePtr interface{}, condiBean ...interface{})
 				}
 				colName = session.Engine.Quote(nm) + "." + colName
 			}
-			session.Statement.ConditionStr = fmt.Sprintf("%v IS NULL OR %v = '0001-01-01 00:00:00'",
+			session.Statement.ConditionStr = fmt.Sprintf("(%v IS NULL OR %v = '0001-01-01 00:00:00')",
 				colName, colName)
 		}
 	}
@@ -1426,18 +1426,6 @@ func (session *Session) Ping() error {
 	return session.DB().Ping()
 }
 
-/*
-func (session *Session) isColumnExist(tableName string, col *core.Column) (bool, error) {
-	defer session.resetStatement()
-	if session.IsAutoClose {
-		defer session.Close()
-	}
-	return session.Engine.dialect.IsColumnExist(tableName, col)
-	//sqlStr, args := session.Engine.dialect.ColumnCheckSql(tableName, colName)
-	//results, err := session.query(sqlStr, args...)
-	//return len(results) > 0, err
-}*/
-
 func (engine *Engine) tableName(beanOrTableName interface{}) (string, error) {
 	v := rValue(beanOrTableName)
 	if v.Type().Kind() == reflect.String {
@@ -1596,7 +1584,7 @@ func (session *Session) dropAll() error {
 func (session *Session) getField(dataStruct *reflect.Value, key string, table *core.Table, idx int) *reflect.Value {
 	var col *core.Column
 	if col = table.GetColumnIdx(key, idx); col == nil {
-		session.Engine.LogWarn(fmt.Sprintf("table %v's has not column %v. %v", table.Name, key, table.Columns()))
+		session.Engine.LogWarn(fmt.Sprintf("table %v has no column %v. %v", table.Name, key, table.ColumnsSeq()))
 		return nil
 	}
 
@@ -4223,7 +4211,7 @@ func (s *Session) Sync2(beans ...interface{}) error {
 		}
 
 		if oriTable == nil {
-			engine.LogWarnf("Table %s has no struct to mapping it", table.Name)
+			//engine.LogWarnf("Table %s has no struct to mapping it", table.Name)
 			continue
 		}
 
diff --git a/statement.go b/statement.go
index 9b9042fa..16b0d392 100644
--- a/statement.go
+++ b/statement.go
@@ -466,7 +466,7 @@ func buildConditions(engine *Engine, table *core.Table, bean interface{},
 		}
 
 		if col.IsDeleted && !unscoped { // tag "deleted" is enabled
-			colNames = append(colNames, fmt.Sprintf("%v IS NULL or %v = '0001-01-01 00:00:00'",
+			colNames = append(colNames, fmt.Sprintf("(%v IS NULL OR %v = '0001-01-01 00:00:00')",
 				colName, colName))
 		}
 
diff --git a/xorm.go b/xorm.go
index d31e2b11..cc51d441 100644
--- a/xorm.go
+++ b/xorm.go
@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	Version string = "0.5.0.0216"
+	Version string = "0.5.1.0228"
 )
 
 func regDrvsNDialects() bool {
@@ -87,7 +87,9 @@ func NewEngine(driverName string, dataSourceName string) (*Engine, error) {
 		TZLocation:    time.Local,
 	}
 
-	engine.SetLogger(NewSimpleLogger(os.Stdout))
+	logger := NewSimpleLogger(os.Stdout)
+	logger.SetLevel(core.LOG_INFO)
+	engine.SetLogger(logger)
 	engine.SetMapper(core.NewCacheMapper(new(core.SnakeMapper)))
 
 	runtime.SetFinalizer(engine, close)