SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 1) Function has (children 1) ExpressionList (children 2) Literal Array_[UInt64_1, NULL, UInt64_2, UInt64_3] Identifier col1 TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier test1_00395