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...
Try to search 999999 9' union all select cast(0x393133353134353632312e39 as char) and '0'0 here.
Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char --. تفسير فرط السبحة في المنام.
As of a couple of weeks ago, I keep seeing a LOT of 404s that don't even look like links
Используйте NULL в UNION-инъекциях вместо попыток угадать строку, дату, число и прочее. Но будьте аккуратны при слепой инъекции, т.к. вы можете спутать ошибку БД и самого приложения. Некоторые языки, например ASP.NET, выдают ошибку при использовании значения NULL (т.к...
As of a couple of weeks ago, I keep seeing a LOT of 404s that don't even look like links
In C++, initializing null pointers with 0 or NULL have the following problems: It is impossible to distinguish between a null pointer and integer 0 for overloaded functions.
SELECT NAZV_F As Название, ROUND(AVG(BALL), 2) As СредБалл FROM FAKULTET, SPEC
NULL в языках программирования Си и C++ — макрос, объявленный в заголовочном файле stddef.h (и других заголовочных файлах).