[td-2895] refactor.

src/common/inc/tname.h

@@ -33,7 +33,7 @@ typedef struct SDataStatis {
 
 typedef struct SColumnInfoData {
   SColumnInfo info;
-  void* pData;    // the corresponding block data in memory
+  char* pData;    // the corresponding block data in memory
 } SColumnInfoData;
 
 typedef struct SResPair {

src/query/inc/qExecutor.h

@@ -234,7 +234,7 @@ typedef struct SQueryRuntimeEnv {
   SQuery*               pQuery;
   uint32_t              status;           // query status
   void*                 qinfo;
-  uint16_t              scanFlag;         // denotes reversed scan of data or not
+  uint8_t               scanFlag;         // denotes reversed scan of data or not
   void*                 pQueryHandle;
 
   int32_t               prevGroupId;      // previous executed group id