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 toUInt32 (children 1) ExpressionList (children 1) Literal UInt64_1 Literal UInt64_2 Function array (children 1) ExpressionList (children 2) Function toUInt32 (children 1) ExpressionList (children 1) Literal UInt64_1 Literal UInt64_1 Function toTypeName (children 1) ExpressionList (children 1) Identifier res