feat: put dup record in the last

include/util/tskiplist.h

@@ -56,10 +56,10 @@ typedef enum { SSkipListPutSuccess = 0, SSkipListPutEarlyStop = 1, SSkipListPutS
 
 typedef struct SSkipList {
   uint32_t           seed;
+  uint16_t           len;
   __compar_fn_t      comparFn;
   __sl_key_fn_t      keyFn;
   TdThreadRwlock    *lock;
-  uint16_t           len;
   uint8_t            maxLevel;
   uint8_t            flags;
   uint8_t            type;  // static info above

source/util/src/tskiplist.c

@@ -185,10 +185,10 @@ void tSkipListPutBatchByIter(SSkipList *pSkipList, void *iter, iter_next_fn_t it
             pKey = SL_GET_NODE_KEY(pSkipList, p);
 
             compare = pSkipList->comparFn(pKey, pDataKey);
-            if (compare >= 0) {
-              if (compare == 0 && !hasDup) hasDup = true;
+            if (compare > 0) {
               break;
             } else {
+              if (compare == 0 && !hasDup) hasDup = true;
               px = p;
               p = SL_NODE_GET_FORWARD_POINTER(px, i);
             }