【资源池化】openGauss算子下推特性合入

1.opengauss内核适配
2.ndpplugin

src/gausskernel/runtime/executor/nodeAgg.cpp

@@ -1897,6 +1897,11 @@ static void agg_fill_hash_table(AggState* aggstate)
             break;
         }
 
+        if (aggstate->ndp_slot && outerslot->tts_mintuple && (outerslot->tts_mintuple->t_infomask & NDP_HANDLED_TUPLE)) {
+            ndp_tableam->handle_hashaggslot(aggstate, &outerslot->tts_minhdr);
+            continue;
+        }
+
         /* set up for advance_aggregates call */
         tmpcontext->ecxt_outertuple = outerslot;
 
@@ -4360,4 +4365,4 @@ static void exec_lookups_agg_flattened(AggState *aggstate, Agg *node, EState *es
 
         phase->evaltrans = ExecBuildAggTrans(aggstate, phase, dosort, dohash);
     }
-}
+}