SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function mapPopulateSeries (children 1) ExpressionList (children 3) Function CAST (children 1) ExpressionList (children 2) Function array (children 1) ExpressionList Literal \'Array(UInt8)\' Function CAST (children 1) ExpressionList (children 2) Function array (children 1) ExpressionList Literal \'Array(UInt8)\' Literal UInt64_5