diff --git a/source/libs/planner/src/planLogicCreater.c b/source/libs/planner/src/planLogicCreater.c
index 55e8dc7b4957e57c811e4ceed575fc64872328e9..084d99cae5102b62efaa82b45a8e86b4aa7fa48e 100644
--- a/source/libs/planner/src/planLogicCreater.c
+++ b/source/libs/planner/src/planLogicCreater.c
@@ -1334,6 +1334,7 @@ static int32_t createSetOpLogicNode(SLogicPlanContext* pCxt, SSetOperator* pSetO
   }
 
   if (TSDB_CODE_SUCCESS == code) {
+    pSetOp->precision = pSetOperator->precision;
     *pLogicNode = (SLogicNode*)pSetOp;
   } else {
     nodesDestroyNode((SNode*)pSetOp);