diff --git a/executor/executor_test.go b/executor/executor_test.go
index e93ba0621f831..14def89c0d914 100644
--- a/executor/executor_test.go
+++ b/executor/executor_test.go
@@ -3572,6 +3572,13 @@ func (s *testSuite3) TestSelectPartition(c *C) {
 	c.Assert(err.Error(), Equals, "[table:1735]Unknown partition 'p4' in table 'th'")
 	err = tk.ExecToErr("select b from tr partition (r1,r4)")
 	c.Assert(err.Error(), Equals, "[table:1735]Unknown partition 'r4' in table 'tr'")
+
+	// test select partition table in transaction.
+	tk.MustExec("begin")
+	tk.MustExec("insert into th values (10,10),(11,11)")
+	tk.MustQuery("select a, b from th where b>10").Check(testkit.Rows("11 11"))
+	tk.MustExec("commit")
+	tk.MustQuery("select a, b from th where b>10").Check(testkit.Rows("11 11"))
 }
 
 func (s *testSuite) TestSelectView(c *C) {
diff --git a/planner/core/rule_partition_processor.go b/planner/core/rule_partition_processor.go
index b3a6200151ce8..4b04412e5c02a 100644
--- a/planner/core/rule_partition_processor.go
+++ b/planner/core/rule_partition_processor.go
@@ -60,9 +60,10 @@ func (s *partitionProcessor) rewriteDataSource(lp LogicalPlan) (LogicalPlan, err
 			// Union->(UnionScan->DataSource1), (UnionScan->DataSource2)
 			children := make([]LogicalPlan, 0, len(ua.Children()))
 			for _, child := range ua.Children() {
-				us := LogicalUnionScan{}.Init(ua.ctx)
-				us.SetChildren(child)
-				children = append(children, us)
+				usChild := LogicalUnionScan{}.Init(ua.ctx)
+				usChild.conditions = us.conditions
+				usChild.SetChildren(child)
+				children = append(children, usChild)
 			}
 			ua.SetChildren(children...)
 			return ua, nil