" cast (^{alias-dot}^^{column}^ as varchar)" . " cast (^{tree}^ as varchar)" . "0"^^ . "1"^^ . " cast (^{tree}^ as varchar)" . "0"^^ . . . . "sql-longvarchar" . " (case (length (^{tree}^)) when 0 then 0 else 1 end)" . " sparql_ebv_of_sqlval (case (length (^{tree}^)) when 0 then 0 else 1 end)" . " __i2id (cast (^{tree}^ as varchar))" .