fix: set parent of new logic node to null

source/libs/planner/src/planUtil.c

@@ -107,6 +107,7 @@ int32_t createColumnByRewriteExpr(SNode* pExpr, SNodeList** pList) {
 int32_t replaceLogicNode(SLogicSubplan* pSubplan, SLogicNode* pOld, SLogicNode* pNew) {
   if (NULL == pOld->pParent) {
     pSubplan->pNode = (SLogicNode*)pNew;
+    pNew->pParent = NULL;
     return TSDB_CODE_SUCCESS;
   }
 

source/libs/planner/test/planOptimizeTest.cpp

@@ -57,4 +57,6 @@ TEST_F(PlanOptimizeTest, eliminateProjection) {
   useDb("root", "test");
 
   run("SELECT c1, sum(c3) FROM t1 GROUP BY c1");
+  run("SELECT c1 FROM t1");
+  run("SELECT * FROM st1");
 }