Add a comment

novikd · web-flow · commit 39b15f913034 · 2024-01-04T16:33:52.000+01:00
diff --git a/src/Planner/CollectTableExpressionData.cpp b/src/Planner/CollectTableExpressionData.cpp
@@ -46,9 +46,12 @@ class CollectSourceColumnsVisitor : public InDepthQueryTreeVisitor<CollectSource
             for (auto & using_element : using_list)
             {
                 auto & column_node = using_element->as<ColumnNode&>();
+                /// This list contains column nodes from left and right tables.
                 auto & columns_from_subtrees = column_node.getExpressionOrThrow()->as<ListNode&>().getNodes();
 
+                /// Visit left table column node.
                 visitUsingColumn(columns_from_subtrees[0]);
+                /// Visit right table column node.
                 visitUsingColumn(columns_from_subtrees[1]);
             }
             return;

Original file line number	Diff line number	Diff line change
`@@ -46,9 +46,12 @@ class CollectSourceColumnsVisitor : public InDepthQueryTreeVisitor<CollectSource`
`46`	`46`	`for (auto & using_element : using_list)`
`47`	`47`	`{`
`48`	`48`	`auto & column_node = using_element->as<ColumnNode&>();`
	`49`	`+ /// This list contains column nodes from left and right tables.`
`49`	`50`	`auto & columns_from_subtrees = column_node.getExpressionOrThrow()->as<ListNode&>().getNodes();`
`50`	`51`
	`52`	`+ /// Visit left table column node.`
`51`	`53`	`visitUsingColumn(columns_from_subtrees[0]);`
	`54`	`+ /// Visit right table column node.`
`52`	`55`	`visitUsingColumn(columns_from_subtrees[1]);`
`53`	`56`	`}`
`54`	`57`	`return;`