Github user shixuan-fan commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/39#discussion_r68454552
--- Diff: query_optimizer/resolver/Resolver.cpp ---
@@ -1684,13 +1857,45 @@ L::LogicalPtr Resolver::resolveJoinedTableReference(
THROW_SQL_ERROR_AT(&joined_table_reference) << "Full outer join is not
supported yet";
}
+L::LogicalPtr Resolver::resolveSortInWindow(
+ const L::LogicalPtr &logical_plan,
+ const E::WindowInfo &window_info) {
+ // Sort the table by (p_key, o_key)
+ std::vector<E::AttributeReferencePtr>
sort_attributes(window_info.partition_by_attributes);
+ sort_attributes.insert(sort_attributes.end(),
+ window_info.order_by_attributes.begin(),
+ window_info.order_by_attributes.end());
+
+ std::vector<bool> sort_directions(
+ window_info.partition_by_attributes.size(), true);
+ sort_directions.insert(sort_directions.end(),
+ window_info.order_by_directions.begin(),
+ window_info.order_by_directions.end());
+
+ std::vector<bool> sort_nulls_first(
+ window_info.partition_by_attributes.size(), false);
+ sort_nulls_first.insert(sort_nulls_first.end(),
+ window_info.nulls_first.begin(),
+ window_info.nulls_first.end());
+
+ L::LogicalPtr sorted_logical_plan =
+ L::Sort::Create(logical_plan,
+ sort_attributes,
+ sort_directions,
+ sort_nulls_first,
--- End diff --
In `quickstep::optimizer::logical::Sort::Create`, the argument is passed by
const lvalue reference. So I just followed the code written before in this file.
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