SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arraySlice (children 1)
     ExpressionList (children 3)
      Literal Array_[NULL, \'b\', NULL, \'d\', \'e\']
      Literal UInt64_2
      Literal UInt64_3
