SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function multiIf (children 1)
     ExpressionList (children 5)
      Literal UInt64_1
      Literal Array_[\'A\', \'B\']
      Literal UInt64_2
      Literal Array_[\'C\', \'D\']
      Literal Array_[\'E\', \'F\']