SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier s
    Function compareSubstrings (children 1)
     ExpressionList (children 5)
      Literal \'ab3\'
      Identifier s
      Literal UInt64_3
      Literal UInt64_6
      Literal UInt64_3
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Function CAST (alias s) (children 1)
            ExpressionList (children 2)
             Identifier s
             Literal \'FixedString(6)\'
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 1)
                  Function concat (alias s) (children 1)
                   ExpressionList (children 3)
                    Literal \'ab\'
                    Function modulo (children 1)
                     ExpressionList (children 2)
                      Identifier number
                      Literal UInt64_6
                    Literal \'cde\'
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    Function numbers (children 1)
                     ExpressionList (children 1)
                      Literal UInt64_8
