bug fixed for sync2

session.go

@@ -3889,6 +3889,7 @@ func (s *Session) Sync2(beans ...interface{}) error {
 			}
 
 			var foundIndexNames = make(map[string]bool)
+			var addedNames = make(map[string]*core.Index)
 
 			for name, index := range table.Indexes {
 				var oriIndex *core.Index
@@ -3912,6 +3913,21 @@ func (s *Session) Sync2(beans ...interface{}) error {
 				}
 
 				if oriIndex == nil {
+					addedNames[name] = index
+				}
+			}
+
+			for name2, index2 := range oriTable.Indexes {
+				if _, ok := foundIndexNames[name2]; !ok {
+					sql := engine.dialect.DropIndexSql(table.Name, index2)
+					_, err = engine.Exec(sql)
+					if err != nil {
+						return err
+					}
+				}
+			}
+
+			for name, index := range addedNames {
 				if index.Type == core.UniqueType {
 					session := engine.NewSession()
 					session.Statement.RefTable = table
@@ -3928,17 +3944,6 @@ func (s *Session) Sync2(beans ...interface{}) error {
 				}
 			}
 		}
-
-			for name2, index2 := range oriTable.Indexes {
-				if _, ok := foundIndexNames[name2]; !ok {
-					sql := engine.dialect.DropIndexSql(table.Name, index2)
-					_, err = engine.Exec(sql)
-					if err != nil {
-						return err
-					}
-				}
-			}
-		}
 	}
 
 	for _, table := range tables {

xorm.go

@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	Version string = "0.4.3.0526"
+	Version string = "0.4.3.0627"
 )
 
 func regDrvsNDialects() bool {