1′ WHERE 3638=3638AND/**/3957=(SELECT/**/UPPER(CHR(126)||’~’||(SELECT/**/(CASE/**/WHEN/**/(3957=3957)/**/THEN/**/1/**/ELSE/**/0/**/END)/**/FROM/**/DUAL)||’~’||CHR(126))/**/FROM/**/DUAL/**/WHERE/**/DBMS_RANDOM.VALUE(2262,10248)=3658)– – 1