Você pode gostar...
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(select concat(0x716b716a71,(select (elt(2196=2196,1))),0x7178786b71))
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search\') union all select null,null,null,null,null,null,null,null,null-- xviy
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search and sleep(5)
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então gulosa
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search union all select null,null,null,null-- orhw
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search and 5267=(select 5267 from pg_sleep(5))
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search and sleep(5)-- ztmr
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(select concat(0x716b767871,(select (elt(8419=8419,1))),0x7176767071))