[GitHub] [incubator-doris] morningman commented on a change in pull request #3034: implements intersect node

[GitBox <gi...@apache.org>]

morningman commented on a change in pull request #3034: implements intersect node
URL: https://github.com/apache/incubator-doris/pull/3034#discussion_r387647623
 
 

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 File path: be/src/exec/intersect_node.cpp
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 @@ -56,4 +43,177 @@ Status IntersectNode::init(const TPlanNode& tnode, RuntimeState* state) {
     }
     return Status::OK();
 }
-}
\ No newline at end of file
+
+Status IntersectNode::prepare(RuntimeState* state) {
+    RETURN_IF_ERROR(ExecNode::prepare(state));
+    _build_pool.reset(new MemPool(mem_tracker()));
+    SCOPED_TIMER(_runtime_profile->total_time_counter());
+    for (size_t i = 0; i < _child_expr_lists.size(); ++i) {
+        RETURN_IF_ERROR(Expr::prepare(_child_expr_lists[i], state, child(i)->row_desc(),
+                                      expr_mem_tracker()));
+    }
+    // pre-computeselect k4 from t where k4 <4 the tuple index of build tuples in the output row
 
 Review comment:
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