SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Function arrayIntersect (children 1)
       ExpressionList (children 2)
        Function array (children 1)
         ExpressionList (children 2)
          Function tuple (children 1)
           ExpressionList (children 2)
            Literal UInt64_1
            Literal Array_[\'a\', \'b\']
          Function tuple (children 1)
           ExpressionList (children 2)
            Literal NULL
            Literal Array_[\'c\']
        Function array (children 1)
         ExpressionList (children 2)
          Function tuple (children 1)
           ExpressionList (children 2)
            Literal UInt64_2
            Literal Array_[\'c\', NULL]
          Function tuple (children 1)
           ExpressionList (children 2)
            Literal UInt64_1
            Literal Array_[\'a\', \'b\']
