feat: db sql

Author: XiaJunjie2020

backend/apps/datasource/crud/datasource.py

@@ -292,10 +292,9 @@ def preview(session: SessionDep, current_user: CurrentUser, id: int, data: Table
             {where} 
             LIMIT 100"""
     elif ds.type == "sqlServer":
-        sql = f"""SELECT [{"], [".join(fields)}] FROM [{conf.dbSchema}].[{data.table.table_name}]
+        sql = f"""SELECT TOP 100 [{"], [".join(fields)}] FROM [{conf.dbSchema}].[{data.table.table_name}]
             {where} 
-            ORDER BY [{fields[0]}]
-            OFFSET 0 ROWS FETCH NEXT 100 ROWS ONLY"""
+            """
     elif ds.type == "pg" or ds.type == "excel":
         sql = f"""SELECT "{'", "'.join(fields)}" FROM "{conf.dbSchema}"."{data.table.table_name}" 
             {where}