Track struct layout over Member inside window functions

1 files changed, 4 insertions, 0 deletions

diff --git a/ydb/library/yql/core/services/yql_lineage.cpp b/ydb/library/yql/core/services/yql_lineage.cpp
index d5e5f4e79ba..c84271ed69a 100644
--- a/ydb/library/yql/core/services/yql_lineage.cpp
+++ b/ydb/library/yql/core/services/yql_lineage.cpp
@@ -294,6 +294,10 @@ private:
                     auto& s = (*dst.StructItems)[fieldName];
                     MergeLineageFromUsedFields(x->Tail(), arg, src, s, newTransforms);
                 }
+            } else if (root->IsCallable("Member") && &root->Head() == &arg) {
+                auto fieldName = root->Tail().Content();
+                const auto& in = *(*src.Fields).FindPtr(fieldName);
+                dst.StructItems = in.StructItems;
             }
         }