SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 4) Identifier i Identifier j ColumnsListMatcher (children 2) ExpressionList (children 3) Identifier i Identifier j Identifier k ColumnsTransformerList (children 1) ColumnsApplyTransformer ColumnsListMatcher (children 2) ExpressionList (children 2) Identifier i Identifier j ColumnsTransformerList (children 1) ColumnsExceptTransformer (children 1) Identifier i TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier columns_transformers