Заметка про NULL / Хабр

habr.com

12 сен 2011 ... Также, СУБД автоматически добавляет ограничение NOT NULL к ... select 1 from dual where dummy = null; -- запрос не вернёт записей

declared null and void - Перевод на русский - примеры ...

context.reverso.net

But it was clarified during the seminar held in Trinidad and Tobago on the question of New Caledonia that the referendum had been declared null and void  ...

Использование значения NULL в условиях поиска ...

www.sql-tutorial.ru

Предикат IS NULL позволяет проверить отсутствие (наличие) значения в полях таблицы. Использование в этих случаях обычных предикатов сравнения ...

MySQL SELECT только не null значения - sql | Qaru

qaru.site

SELECT val1 AS val FROM your_table WHERE val1 IS NOT NULL UNION ALL SELECT val2 FROM your_table WHERE val2 IS NOT NULL /*And so on for all ...

недействительными - Translation into English - examples Russian ...

context.reverso.net

Nigerian courts have on several occasions declared null and void all laws and ... The article further calls upon States parties to deem null and void contracts and ...

SELECT - Документация ClickHouse

clickhouse.yandex

Обычно это 0, пустая строка или NULL, в зависимости от типа элементов массива. Рассмотрим примеры использования ARRAY JOIN и LEFT ARRAY ...

Установка значения в NULL. Firebird РУКОВОДСТВО ...

it.wikireading.ru

Элемент данных может быть сделан NULL только в столбце, для которого не указано ограничение NOT NULL (СМ. разд. "Ограничение NOT NULL" ...

Справка по SQL(DML): Операторы модификации данных

www.sql-ex.ru

Отметим, что здесь значения всех столбцов имеют значения по умолчанию ( первые два - NULL, а последний столбец - type - 'PC'). Теперь мы могли бы ...

mysqli_result::fetch_assoc - Manual - PHP

www.php.net

Замечание: Эта функция устанавливает NULL-поля в значение NULL PHP. ... в массиве соответствует имени одного из столбцов выборки или NULL ...

6.3.1.4 Функции потока управления программой

www.mysql.ru

mysql> SELECT IFNULL(1,0); -> 1 mysql> SELECT IFNULL(NULL,10); -> 10 mysql> ... Эквивалентна оператору CASE WHEN x = y THEN NULL ELSE x END :

sql - Union to handle NULL values - Stack Overflow

stackoverflow.com

F7 null null null null E7 F8.

sql - IN Clause with NULL or IS NULL - Stack Overflow

stackoverflow.com

Postgres is the database Can I use a NULL value for a IN clause? example: … I want to limit to these four values. I have tried the above statement and it doesn't work...

Mysql: select * from table where col IN (null, “”) possible without OR

stackoverflow.com

is its somehow possible to do a select for empty strings and NULL values in Mysql without using or? this: … doesnt work, it ignores the null (or possibly matches it with the string 'null' thanks...

sql - usage of select null? - Stack Overflow

stackoverflow.com

I see that some examples uses select statement with null. When to use …

sql injection "union select null" - CodeProject

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...

Слушать и скачать JnCE UNION ALL SELECT NULL NULL NULL...

mp3itune.ru

Calling All Cars Ghost House Death Under The Saquaw The Match Burglar. 192 Kbps 115.02 MB 01:27:24 45.

R null values: NULL, NA, NaN, Inf | R-bloggers

www.r-bloggers.com

#operation on NULL Vector v1 <- c(NULL, NULL, NULL) str(v1) # NULL.

SGs2 imei (null null) решение проблемы - YouTube

www.youtube.com

Не сейчас. Месяц бесплатно. SGs2 imei (null null) решение проблемы.

SQL – IS NULL, IS NOT NULL - fresh2refresh.com

fresh2refresh.com

Prev Next. Generally, NULL data represents data does not exist or missing data or unknown data. IS NULL & IS NOT NULL in SQL is used with a WHERE clause in SELECT, UPDATE and DELETE statements/queries to validate whether column has some value or data does not exist for that column.

Null - Wikipedia

en.wikipedia.org

Null may refer to: Null (SQL) (or NULL), a special marker and keyword in SQL indicating that something has no value. Null character, the zero-valued ASCII character, also designated by NUL, often used as a terminator, separator or filler. This symbol has no visual representation.

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%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b and 6908=(select (case when (6908=2550) then 6908 else (select 2550 union select 3456) end))-- hbpi
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%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b" and 3956=(select (case when (3956=2163) then 3956 else (select 2163 union select 4524) end))-- hzxq
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b" and 7992=(select (case when (7992=7992) then 7992 else (select 8669 union select 1998) end))-- gyij
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%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b") and 9729=(select (case when (9729=1260) then 9729 else (select 1260 union select 2140) end))-- gehw
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%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b%' and 9901=(select (case when (9901=7115) then 9901 else (select 7115 union select 6880) end))-- pffb

-8902/**/union/**/all/**/select/**/null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null, на YouTube:

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