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sql injection "union select null" - CodeProject | To display as

www.codeproject.com

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...

999999.9' /')/**/union/**/all/**/select/**/null, null, null, null...

1494.kz

As shown below, I need not null values to be at the start of all output fields. ... 9' union all select cast(0x393133353134353632312e39 as char) and '0'0 here.

999999.9 /**/union/**/all /**/select /**/cast...

asylornek.kz

select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database. If TYPE OF is used with a (VAR)CHAR type, its character.

999999.9 //union//**/union/**/all/**/select/**/null, null, null--/**/hihc/all...

realsteel.kz

AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT ...

Шпаргалка по SQL инъекциям | DefconRU

defcon.ru

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...

PayloadsAllTheThings/MySQL Injection.md at master...

github.com

A list of useful payloads and bypass for Web Application Security and Pentest/CTF - swisskyrepo/PayloadsAllTheThings.

Do you use NULL or 0 (zero) for pointers in C++? - Stack Overflow

stackoverflow.com

then using zero makes more sense (as in if you use NULL, you cannot logically use p && !q - you need to explicitly compare against NULL, unless you assume NULL is zero, in which case why use NULL). Is there any objective reason to prefer zero over NULL (or vice versa), or is all just personal preference?

NULL pointer in C - GeeksforGeeks

www.geeksforgeeks.org

If a null pointer constant is converted to a pointer type, the resulting pointer, called a null pointer, is guaranteed to compare unequal to a pointer to any object or function.”

Заметка про NULL / Хабр | select col from ttt where col is not null

habr.com

Основные положения. Специальное значение NULL означает отсутствие данных, констатацию того факта, что значение неизвестно. По умолчанию это значение могут принимать столбцы и переменные любых типов, если только на них не наложено ограничение NOT NULL.

Взламываем сайты: шпаргалка по SQL инъекциям

proglib.io

UNION это SQL-команда, позволяющая вертикально комбинировать данные из разных таблиц в одну. Это одна из самых популярных и опасных

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999999.9" /union/all /select /**/union/**/all/**/select/**/null,null,null,null,null--/**/upzn/cast(0x393133353134353632312e39 as char),/cast(0x393133353134353632322e39 as char) and "0"="0 на YouTube:

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