diff --git a/chain.go b/chain.go
index 5f96812..3ddeb8a 100644
--- a/chain.go
+++ b/chain.go
@@ -288,21 +288,6 @@ func (this *Query) BuildSelectSql() (map[string]interface{}, error) {
 		return nil, errors.New("参数错误，没有数据表")
 	}
 	var table = ""
-	if strings.Contains(this.table, "select ") || strings.HasPrefix(this.table, "(") {
-		table = this.table
-	} else {
-		table = getTableName(this.dbname, this.table, this.dbtype)
-	}
-
-	// var err error
-
-	var sql, title string
-
-	if this.title != "" {
-		title = this.title
-	} else {
-		title = "*"
-	}
 	withSql := ""
 	if len(this.with) > 0 {
 		var builder strings.Builder
@@ -326,6 +311,22 @@ func (this *Query) BuildSelectSql() (map[string]interface{}, error) {
 			withSql = builder.String()
 		}
 	}
+	if withSql != "" || strings.Contains(this.table, "select ") || strings.HasPrefix(this.table, "(") {
+		table = this.table
+	} else {
+		table = getTableName(this.dbname, this.table, this.dbtype)
+	}
+
+	// var err error
+
+	var sql, title string
+
+	if this.title != "" {
+		title = this.title
+	} else {
+		title = "*"
+	}
+
 	if this.dbtype == "mssql" {
 		if this.page_size > 0 {
 			sql = helper.StringJoin(withSql, "select top ", helper.ToStr(this.page_size), " ")
@@ -362,7 +363,7 @@ func (this *Query) BuildSelectSql() (map[string]interface{}, error) {
 				builder.WriteString("left")
 			}
 			builder.WriteString(" join ")
-			if strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") {
+			if withSql != "" || strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") {
 				builder.WriteString(joinitem[0])
 			} else {
 				builder.WriteString(getTableName(this.dbname, joinitem[0]))
diff --git a/db.go b/db.go
index e2acdd2..43c7340 100644
--- a/db.go
+++ b/db.go
@@ -304,18 +304,6 @@ func GetRow(dbName, table_name, alias string, titles string, with, join [][]stri
 	}
 
 	table := ""
-	if strings.Contains(table_name, "select ") || strings.HasPrefix(table, "(") {
-		table = table_name
-	} else {
-		table = getTableName(dbName, table_name)
-	}
-	var sql_str, title string
-
-	if titles != "" {
-		title = titles
-	} else {
-		title = "*"
-	}
 	withSql := ""
 	if len(with) > 0 {
 		var builder strings.Builder
@@ -339,6 +327,19 @@ func GetRow(dbName, table_name, alias string, titles string, with, join [][]stri
 			withSql = builder.String()
 		}
 	}
+	if withSql != "" || strings.Contains(table_name, "select ") || strings.HasPrefix(table, "(") {
+		table = table_name
+	} else {
+		table = getTableName(dbName, table_name)
+	}
+	var sql_str, title string
+
+	if titles != "" {
+		title = titles
+	} else {
+		title = "*"
+	}
+
 	if DB_PROVIDER == "TencentDB" {
 		sql_str = helper.StringJoin("/*slave*/ ", withSql, " select ", title)
 	} else {
@@ -364,7 +365,7 @@ func GetRow(dbName, table_name, alias string, titles string, with, join [][]stri
 				builder.WriteString("left")
 			}
 			builder.WriteString(" join ")
-			if strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") || len(joinitem) > 4 {
+			if withSql != "" || strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") || len(joinitem) > 4 {
 				builder.WriteString(joinitem[0])
 			} else {
 				builder.WriteString(getTableName(dbName, joinitem[0]))
@@ -492,19 +493,6 @@ func FetchRows(dbName, table_name, alias string, titles string, with, join [][]s
 		return count, list, errors.New("没有数据表")
 	}
 	table := ""
-	if strings.Contains(table_name, "select ") || strings.HasPrefix(table, "(") {
-		table = table_name
-	} else {
-		table = getTableName(dbName, table_name)
-	}
-
-	var sql_str, title string
-
-	if titles != "" {
-		title = titles
-	} else {
-		title = "*"
-	}
 	withSql := ""
 	if len(with) > 0 {
 		var builder strings.Builder
@@ -528,6 +516,20 @@ func FetchRows(dbName, table_name, alias string, titles string, with, join [][]s
 			withSql = builder.String()
 		}
 	}
+	if withSql != "" || strings.Contains(table_name, "select ") || strings.HasPrefix(table, "(") {
+		table = table_name
+	} else {
+		table = getTableName(dbName, table_name)
+	}
+
+	var sql_str, title string
+
+	if titles != "" {
+		title = titles
+	} else {
+		title = "*"
+	}
+
 	if DB_PROVIDER == "TencentDB" {
 		sql_str = helper.StringJoin("/*slave*/ ", withSql, " select ", title)
 	} else {
@@ -553,7 +555,7 @@ func FetchRows(dbName, table_name, alias string, titles string, with, join [][]s
 				builder.WriteString("left")
 			}
 			builder.WriteString(" join ")
-			if strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") || len(joinitem) > 4 {
+			if withSql != "" || strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") || len(joinitem) >= 4 {
 				builder.WriteString(joinitem[0])
 			} else {
 				builder.WriteString(getTableName(dbName, joinitem[0]))
diff --git a/transaction_chain.go b/transaction_chain.go
index 2cc6934..d73b639 100644
--- a/transaction_chain.go
+++ b/transaction_chain.go
@@ -222,19 +222,6 @@ func (this *TxQuery) BuildSelectSql() (map[string]interface{}, error) {
 		return nil, errors.New("参数错误，没有数据表")
 	}
 	var table = ""
-	if strings.Contains(this.table, "select ") || strings.HasPrefix(this.table, "(") {
-		table = this.table
-	} else {
-		table = getTableName(this.dbname, this.table)
-	}
-
-	var sql, title string
-
-	if this.title != "" {
-		title = this.title
-	} else {
-		title = "*"
-	}
 	withSql := ""
 	if len(this.with) > 0 {
 		var builder strings.Builder
@@ -258,6 +245,20 @@ func (this *TxQuery) BuildSelectSql() (map[string]interface{}, error) {
 			withSql = builder.String()
 		}
 	}
+	if withSql != "" || strings.Contains(this.table, "select ") || strings.HasPrefix(this.table, "(") {
+		table = this.table
+	} else {
+		table = getTableName(this.dbname, this.table)
+	}
+
+	var sql, title string
+
+	if this.title != "" {
+		title = this.title
+	} else {
+		title = "*"
+	}
+
 	sql = helper.StringJoin(withSql, "select ", title)
 
 	if this.alias != "" {
@@ -267,15 +268,31 @@ func (this *TxQuery) BuildSelectSql() (map[string]interface{}, error) {
 	sql = helper.StringJoin(sql, " from ", table)
 
 	if len(this.join) > 0 {
+		var builder strings.Builder
 		for _, joinitem := range this.join {
 			if len(joinitem) < 2 {
 				continue
 			}
-			if len(joinitem) == 3 {
-				sql = helper.StringJoin(sql, " ", joinitem[2], " join ", getTableName(this.dbname, joinitem[0]), " on ", joinitem[1])
-			} else { //默认左连接
-				sql = helper.StringJoin(sql, " left join ", getTableName(this.dbname, joinitem[0]), " on ", joinitem[1])
+			builder.WriteString(sql)
+			builder.WriteString(" ")
+			builder.WriteString(sql)
+			builder.WriteString(" ")
+			if len(joinitem) >= 3 {
+				builder.WriteString(joinitem[2])
+			} else {
+				builder.WriteString("left")
+			}
+			builder.WriteString(" join ")
+			if withSql != "" || strings.Contains(joinitem[0], "select ") || strings.HasPrefix(joinitem[0], "(") {
+				builder.WriteString(joinitem[0])
+			} else {
+				builder.WriteString(getTableName(this.dbname, joinitem[0]))
 			}
+			builder.WriteString(" on ")
+			builder.WriteString(joinitem[1])
+		}
+		if builder.Len() > 0 {
+			sql = builder.String()
 		}
 	}
 	if len(this.where) > 0 || len(this.where_or) > 0 {