diff --git a/chain.go b/chain.go
index 4c2e37f..6c1bf7a 100644
--- a/chain.go
+++ b/chain.go
@@ -159,8 +159,12 @@ func (this *Query) BuildSelectSql() (map[string]interface{}, error) {
 	if this.dbname == "" && this.table == "" {
 		return nil, errors.New("参数错误，没有数据表")
 	}
-
-	table := getTableName(this.dbname, this.table, this.dbtype)
+	var table = ""
+	if strings.Contains(this.table, "select ") {
+		table = this.table
+	} else {
+		table = getTableName(this.dbname, this.table, this.dbtype)
+	}
 
 	// var err error
 
diff --git a/transaction_chain.go b/transaction_chain.go
index dfa90bc..5266d2f 100644
--- a/transaction_chain.go
+++ b/transaction_chain.go
@@ -160,8 +160,12 @@ func (this *TxQuery) BuildSelectSql() (map[string]interface{}, error) {
 	if this.dbname == "" && this.table == "" {
 		return nil, errors.New("参数错误，没有数据表")
 	}
-
-	table := getTableName(this.dbname, this.table)
+	var table = ""
+	if strings.Contains(this.table, "select ") {
+		table = this.table
+	} else {
+		table = getTableName(this.dbname, this.table)
+	}
 
 	var sql, title string