SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Literal UInt64_38
    Function concat (children 1)
     ExpressionList (children 2)
      Function position (children 1)
       ExpressionList (children 2)
        Function concat (children 1)
         ExpressionList (children 2)
          Function concat (children 1)
           ExpressionList (children 2)
            Function position (children 1)
             ExpressionList (children 3)
              Function concat (children 1)
               ExpressionList (children 1)
                Function toUInt256 (children 1)
                 ExpressionList (children 1)
                  Literal UInt64_3
              Literal \'ca\'
              Literal UInt64_2
            Literal UInt64_3
          Function NULLIF (children 1)
           ExpressionList (children 2)
            Literal UInt64_1
            Function materialize (children 1)
             ExpressionList (children 1)
              Function toLowCardinality (children 1)
               ExpressionList (children 1)
                Literal UInt64_1
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Function toNullable (children 1)
           ExpressionList (children 1)
            Literal \'ca\'
      Function concat (children 1)
       ExpressionList (children 3)
        Function NULLIF (children 1)
         ExpressionList (children 2)
          Literal UInt64_1
          Literal UInt64_1
        Function concat (children 1)
         ExpressionList (children 1)
          Literal UInt64_3
        Function toNullable (children 1)
         ExpressionList (children 1)
          Literal UInt64_3
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier set_index_not__fuzz_0
   ExpressionList (children 2)
    Function toNullable (children 1)
     ExpressionList (children 1)
      Literal UInt64_3
    Function concat (children 1)
     ExpressionList (children 1)
      Function concat (children 1)
       ExpressionList (children 2)
        Function NULLIF (children 1)
         ExpressionList (children 2)
          Literal UInt64_1
          Literal UInt64_1
        Function toNullable (children 1)
         ExpressionList (children 1)
          Function toNullable (children 1)
           ExpressionList (children 1)
            Literal UInt64_3
   Set
