diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 9631aa76bb313b56a63cb4c6fc29e9316ecfab8f..6e3c8f111c1594279aa9ffc05d61ab342bfe4482 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -1940,6 +1940,7 @@ int32_t apercentileFunctionMerge(SqlFunctionCtx* pCtx) {
   }
 
   if (pInfo->algo != APERCT_ALGO_TDIGEST) {
+    buildHistogramInfo(pInfo);
     qDebug("%s after merge, total:%" PRId64 ", numOfEntry:%d, %p", __FUNCTION__, pInfo->pHisto->numOfElems,
            pInfo->pHisto->numOfEntries, pInfo->pHisto);
   }