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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 //cast(0x393133353134353632312e39...)

1494.kz

Union select null, null, null, null, null, null, null from information_schema.tables. for a small database containing three tables. this instruction is used

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

realsteel.kz

...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

Шпаргалка по SQL инъекциям | DefconRU

defcon.ru

CHAR() (SM): SELECT CHAR(64) Переводит ASCII-код в соответствующий символ. 9. Оператор UNION С оператором UNION можно делать запросы к пересечению таблиц. В основном, вы можете отправить запрос, возвращающий значение из другой таблицы.

Уязвимость SQL-инъекция (ч. 1): Основы SQLi, простая инъекция...

HackWare.ru

Конструируем наш запрос с UNION: Iron Man' AND 0 UNION SELECT 1,2,3,4,5,6,7 #. Как я сказал, количество полей должно быть в обоих SELECT одинаковое, а вот что в этих полях — не очень важно. Можно, например, прописать просто цифры — и именно они и будут выведены.

c - How can a char variable accept Pointer(NULL) as... - Stack Overflow

stackoverflow.com

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...

Внедрение SQL-кода — Википедия

ru.wikipedia.org

-1 UNION SELECT group_concat(username, 0x3a, password) FROM admin.

Are there reasons to assign NULL instead of 0 to non-pointer variables?

softwareengineering.stackexchange.com

Q: If NULL and 0 are equivalent as null pointer constants, which should I use? A: Many programmers believe that NULL should be used in all pointer contexts, as a reminder that the value is to be thought of as a pointer. Others feel that the confusion surrounding NULL and 0 is only compounded by hiding 0...

Предикат LIKE и регулярные выражения | Страница 2 | SQL-tutorial.ru

www.sql-tutorial.ru

SELECT '5c2e' UNION ALL. Select 'C2H5OH' union all.

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