diff --git a/main_test.go b/main_test.go
index 1b6b24e..b5a2f3d 100644
--- a/main_test.go
+++ b/main_test.go
@@ -5,7 +5,6 @@ import (
 	"testing"
 
 	_ "git.botann.com/lijun/sql-builder/conf"
-	"git.botann.com/tinycs/boomerang/tydb"
 )
 
 type Page struct {
@@ -54,7 +53,7 @@ func TestMain(m *testing.M) {
 		Name    string
 	}
 	var page Page
-	sql_builder := NewSqlBuilder(tydb.DB())
+	sql_builder := DefaultSqlBuilder()
 	ids := []int{1, 2, 3, 4, 5}
 	sql_builder.Sql = `select autoseq,name from tsysuser where del = 0 @c order by @o`
 	sql_builder.Conditions("autoseq in (?)", ids)
diff --git a/sql_builder.go b/sql_builder.go
index 43650bb..6a43952 100644
--- a/sql_builder.go
+++ b/sql_builder.go
@@ -11,5 +11,5 @@ func NewSqlBuilder[T tydb.QOneRowRst | tytaos.QOneRowRst | int](connector db.Sql
 }
 
 func DefaultSqlBuilder() *db.SqlBuilder[tydb.QOneRowRst] {
-	return NewSqlBuilder(tydb.DB())
+	return NewSqlBuilder[tydb.QOneRowRst](tydb.DB())
 }