diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index e590fdbcbb06c3da4d1466744e5720b4f1b2ebf9..d7ac7dd277c0487b97096821753c904da137e534 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -448,13 +448,13 @@ typedef struct SSqlFuncMsg {
 
 
 typedef struct SExprInfo {
-  SSqlFuncMsg base;
   SColumnFilterInfo * pFilter;
   struct tExprNode* pExpr;
   int16_t     bytes;
   int16_t     type;
   int32_t     interBytes;
   int64_t     uid;
+  SSqlFuncMsg base;
 } SExprInfo;
 
 /*