aLl sElEcT null null null null.
Number of null-s on change between passed and failed queries is the one attacker looks for.
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...
11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- Если нет ошибки, значит синтаксис верный, т.е. используется MS SQL Server.
sql - Union to handle NULL values - Stack Overflow ... Try to search 999999 9' union all select cast(0x393133353134353632312e39 as char)
SELECT * FROM schedule WHERE ((all)) IS NOT NULL. Do I just remove the all and go..?
But what exactly is NULL and how it’s defined? Strictly speaking, NULL expands to an implementation-defined null pointer constant which is defined in many header files such as
select cast(0 as bit not null) as myzero, -- invalid syntax cast(1 as bit not null) as myone -- invalid syntax into dbo.zz_foo; (also, too bad there's no way
...Union all select null, null, null, null, null, null, null, null, null, null
I've been asked about counting NULL values several times so I'm going to blog about it in hopes others will be helped by this explanation of NULL values in SQL and how to