SQL is null and = null - Stack Overflow
In SQL, a comparison between a null value and any other value (including another null) using a comparison operator (eg =, !=, <, etc) will result in a null, which is considered as false for the purposes of a where clause (strictly speaking, it's "not true", rather than "false", but the effect is the same).
sql injection "union select null" - CodeProject | To display as
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...
qndbq1bbxilyCzFA') UNION ALL SELECT NULL... - Pastebin.com
qndbq7bbxilyCzFA') UNION ALL SELECT NULL,NULL,NULL,CONCAT(0x716e646271,IFNULL(CAST(grantee AS CHAR),0x20),0x716a716771),NULL FROM INFORMATION_SCHEMA.USER_PRIVILEGES#qjqgq.
«Google Переводчик» — онлайн-перевод
Возможность перевести текст из буфера обмена, веб-страницу или документ на многие языки.
horse and rider as one.
Шпаргалка по SQL инъекциям | DefconRU
11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- Если нет ошибки, значит синтаксис верный, т.е. используется MS SQL Server.
Использование значения NULL в условиях поиска | Интерактивный...
Предикат IS NULL позволяет проверить отсутствие (наличие) значения в полях таблицы. Использование в этих случаях обычных предикатов сравнения может привести к неверным результатам, так как сравнение со значением NULL дает результат UNKNOWN (неизвестно).
Null character - Wikipedia
The null character (also null terminator or null byte) is a control character with the value zero. It is present in many character sets, including ISO/IEC 646 (or ASCII), the C0 control code, the Universal Coded Character Set (or Unicode), and EBCDIC.
Null's Servers
Null's Serverswith unlimited gems, gold, and other resources. Do whatever you want absolutely free. Scroll down, choose the server and download it now!
ISNULL (Transact-SQL) - SQL Server | Microsoft Docs
Если в аргументе check_expression предоставлено литеральное значение NULL, возвращает тип данных
Функции CAST и CONVERT (Transact-SQL) - SQL... | Microsoft Docs
SELECT 'The list price is ' + CAST(ListPrice AS varchar(12)) AS ListPrice FROM dbo.DimProduct WHERE ListPrice BETWEEN 350.00 AND 400.00