From 02effd45aa715e45a13d24728ecfcf07e4bbd53f Mon Sep 17 00:00:00 2001
From: wangfeihuo <wangfeihuo@huawei.com>
Date: Tue, 15 Apr 2025 19:46:33 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dsmp=E7=9A=84=E6=97=B6?=
 =?UTF-8?q?=E5=80=99=E5=B5=8C=E5=A5=97=E4=BA=8B=E5=8A=A1=E4=BA=A7=E7=94=9F?=
 =?UTF-8?q?core=E7=9A=84=E9=97=AE=E9=A2=98?=
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---
 src/gausskernel/optimizer/plan/createplan.cpp |  3 ++-
 src/test/regress/expected/smp.out             | 12 ++++++++++++
 src/test/regress/sql/smp.sql                  | 16 ++++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/gausskernel/optimizer/plan/createplan.cpp b/src/gausskernel/optimizer/plan/createplan.cpp
index 7dcedd1bf7..8dce2a5611 100755
--- a/src/gausskernel/optimizer/plan/createplan.cpp
+++ b/src/gausskernel/optimizer/plan/createplan.cpp
@@ -9645,9 +9645,10 @@ ModifyTable* make_modifytable(CmdType operation, bool canSetTag, List* resultRel
         isUstore = result_rte->is_ustore;
     }
 
+    int nest_level = GetCurrentTransactionNestLevel();  // not support the smp in nest transaction.
     bool supportIUDParallel =
         (operation == CMD_DELETE || operation == CMD_UPDATE || (operation == CMD_INSERT && !upsertClause)) &&
-        returningLists == NIL && !isUstore && list_length(subplans) == 1 &&
+        returningLists == NIL && !isUstore && list_length(subplans) == 1 && nest_level <= 1 &&
         (linitial_node(RangeTblEntry, root->parse->rtable)->orientation == REL_ROW_ORIENTED);
 
     Assert(list_length(resultRelations) == list_length(subplans));
diff --git a/src/test/regress/expected/smp.out b/src/test/regress/expected/smp.out
index 2026bf5db6..0bea03e687 100644
--- a/src/test/regress/expected/smp.out
+++ b/src/test/regress/expected/smp.out
@@ -1564,6 +1564,18 @@ select /*+ set(query_dop 1002) indexonlyscan(ios_t1) */ count(*) from ios_t1;
 (1 row)
 
 drop table ios_t1;
+create table pktable2(f1 int primary key);
+NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "pktable2_pkey" for table "pktable2"
+create table fktable2(f1 int references pktable2 deferrable initially deferred);
+insert into pktable2 values(1);
+begin;
+insert into fktable2 values(1);
+savepoint x;
+delete from fktable2;
+rollback to x;
+commit;
+drop table fktable2;
+drop table pktable2;
 --clean
 set search_path=public;
 drop schema test_smp cascade;
diff --git a/src/test/regress/sql/smp.sql b/src/test/regress/sql/smp.sql
index fdb88ae94c..3f8979132e 100644
--- a/src/test/regress/sql/smp.sql
+++ b/src/test/regress/sql/smp.sql
@@ -304,6 +304,22 @@ explain(costs off) select /*+ set(query_dop 1002) indexonlyscan(ios_t1) */ count
 select /*+ set(query_dop 1002) indexonlyscan(ios_t1) */ count(*) from ios_t1;
 
 drop table ios_t1;
+
+
+create table pktable2(f1 int primary key);
+create table fktable2(f1 int references pktable2 deferrable initially deferred);
+insert into pktable2 values(1);
+
+begin;
+insert into fktable2 values(1);
+savepoint x;
+delete from fktable2;
+rollback to x;
+commit;
+
+drop table fktable2;
+drop table pktable2;
+
 --clean
 set search_path=public;
 drop schema test_smp cascade;
-- 
Gitee