From f46710c718d980eee2674c29065e05f481543789 Mon Sep 17 00:00:00 2001
From: zhouxiongjia <719216473@qq.com>
Date: Fri, 30 Jul 2021 17:32:21 +0800
Subject: [PATCH] fix a bug about ROWNUM in partition table

---
 src/gausskernel/runtime/executor/nodePartIterator.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gausskernel/runtime/executor/nodePartIterator.cpp b/src/gausskernel/runtime/executor/nodePartIterator.cpp
index a0660b42d..143c5ca05 100644
--- a/src/gausskernel/runtime/executor/nodePartIterator.cpp
+++ b/src/gausskernel/runtime/executor/nodePartIterator.cpp
@@ -141,9 +141,11 @@ TupleTableSlot* ExecPartIterator(PartIteratorState* node)
     if (!TupIsNull(slot))
         return slot;
 
-    node->ps.lefttree->ps_rownum--;
     /* switch to next partition until we get a unempty tuple */
     for (;;) {
+        /* minus wrong rownum */
+        node->ps.lefttree->ps_rownum--;
+
         if (node->currentItr + 1 >= partitionScan) /* have scanned all partitions */
             return NULL;