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...
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...
Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char --. تفسير فرط السبحة في المنام.
The NULL macro is required to expand to "an implementation-defined null pointer constant". A null pointer constant is defined as "An integer constant expression with the value 0, or such an expression cast to type void *". Counterintuitively, this definition does not require the expansion of NULL to be an...
11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- Если нет ошибки, значит синтаксис верный, т.е. используется MS SQL Server.
The macro NULL and value 0 are equivalent as null pointer constants, but NULL is cleaner because it represents the purpose of using the constant for a pointer.
that's wrong though. (char*)NULL isn't a string at all, it's a null pointer. this isn't a string either even though it's an array of char.
The macro NULL is a null-pointer constant and has either an integer type or a pointer type. Using NULL to assign or initialize a non-pointer variable will lead to question marks from other programmers at the least and it might result in compiler failures. A line like.
Public Shared Sub PrintCountsAndBytes(chars() As Char, enc As Encoding) '. Display the name of the encoding used.
NULL в языках программирования Си и C++ — макрос, объявленный в заголовочном файле stddef.h (и других заголовочных файлах).