SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Function lambda (alias lambda) (children 1) ExpressionList (children 2) Function tuple (children 1) ExpressionList (children 1) Identifier x Function plus (children 1) ExpressionList (children 2) Identifier x Literal UInt64_1 ExpressionList (children 1) Function lambda (children 1) ExpressionList (children 1) Identifier id TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier test_table