grcq vs ‘/**/and/**/4500=(select/**/upper(xmltype(chr(60)||chr(58)||chr(113)||chr(106)||chr(98)||chr(112)||chr(113)||(select/**/(case/**/when/**/(4500=4500)/**/then/**/1/**/else/**/0/**/end)/**/from/**/dual)||chr(113)||chr(106)||chr(122)||chr(122)||chr(113)||chr(62)))/**/from/**/dual)/**/and/**/’rvnl’=’rvnl: What's the difference?
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Which is correct: grcq or ‘/**/and/**/4500=(select/**/upper(xmltype(chr(60)||chr(58)||chr(113)||chr(106)||chr(98)||chr(112)||chr(113)||(select/**/(case/**/when/**/(4500=4500)/**/then/**/1/**/else/**/0/**/end)/**/from/**/dual)||chr(113)||chr(106)||chr(122)||chr(122)||chr(113)||chr(62)))/**/from/**/dual)/**/and/**/’rvnl’=’rvnl