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...
As of a couple of weeks ago, I keep seeing a LOT of 404s that don't even look like links
Существуют специальные операторы IS NULL и IS NOT NULL, которые позволяют производить сравнения с NULLами.
Синтаксис: 0xHEX_ЧИСЛО (SM): SELECT CHAR(0x66) (S) SELECT 0x5045 (это не число, а строка) (M) SELECT 0x50 + 0x45
Также может использоваться для присвоения значения NULL, если столбец не имеет значений по умолчанию и может принимать значения
NULL в языках программирования Си и C++ — макрос, объявленный в заголовочном файле stddef.h (и других заголовочных файлах).
SELECT CAST(З.Дата_Время AS DATE) AS Дата, Фамилия + ' ' + LEFT(Имя, 1) + '.' + ISNULL(' ' + LEFT(Отчество, 1)