SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function mapAdd (alias res) (children 1)
     ExpressionList (children 2)
      Function map (children 1)
       ExpressionList (children 4)
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'ab\'
        Function toFloat32 (children 1)
         ExpressionList (children 1)
          Literal Float64_1.1
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'cd\'
        Literal UInt64_1
      Function map (children 1)
       ExpressionList (children 4)
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'ab\'
        Literal Float64_2.2
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal \'cd\'
        Literal UInt64_1
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier res
