diff --git a/lualib/skynet/db/mysql.lua b/lualib/skynet/db/mysql.lua
index b5d97e2c..f08995b0 100644
--- a/lualib/skynet/db/mysql.lua
+++ b/lualib/skynet/db/mysql.lua
@@ -164,7 +164,7 @@ local function _recv_packet(self,sock)
         typ = "ERR"
     elseif field_count == 0xfe then
         typ = "EOF"
-    elseif field_count <= 250 then
+    else
         typ = "DATA"
     end