SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function mapContainsKeyLike (children 1)
     ExpressionList (children 2)
      Function map (children 1)
       ExpressionList (children 4)
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'aa\'
        Literal UInt64_1
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'b\'
        Literal UInt64_2
      Literal \'a%\'