SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 2) Function mapPopulateSeries (alias res) (children 1) ExpressionList (children 2) Function array (children 1) ExpressionList (children 2) Function toInt16 (children 1) ExpressionList (children 1) Literal UInt64_1 Literal UInt64_2 Function array (children 1) ExpressionList (children 2) Function toInt16 (children 1) ExpressionList (children 1) Literal UInt64_1 Literal UInt64_1 Function toTypeName (children 1) ExpressionList (children 1) Identifier res