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SQL using If Not Null on a Concatenation - Stack Overflow

stackoverflow.com

If I have the table … This will display Firstname-Middlename-Surname e.g. … The second one (Jane’s) displays correct, however since John doesn’t have a middlename, I want it to ignore the second dash.

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...

SQL NULL Values - IS NULL and IS NOT NULL

www.w3schools.com

The IS NOT NULL operator is used to test for non-empty values (NOT NULL values). The following SQL lists all customers with a value in the "Address" field: Example. SELECT CustomerName, ContactName, Address FROM Customers WHERE Address IS NOT NULL

MySQL :: MySQL 8.0 Reference Manual :: 12.5 String Functions and...

dev.mysql.com

CONCAT() returns NULL if any argument is NULL. mysql> SELECT CONCAT('My', 'S', 'QL')

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

SET CONCAT_NULL_YIELDS_NULL in SQL Server

www.tech-recipes.com

CONCAT_NULL_YIELDS_NULL control whether concatenation results shall be treated as NULL or empty string values.

Функция CONCAT | Интерактивный учебник по SQL | SQL-tutorial.ru

www.sql-tutorial.ru

Первая из них – CONCAT – возвращает NULL, если среди аргументов функции встречается NULL, вторая – CONCAT_WS – опускает аргумент, если его значение NULL. Кроме того, эта функция первым аргументом имеет разделитель, используемый при конкатенации.

NULL Values In SQL | SQL UNION Clause - DataFlair

data-flair.training

SQL supports NULL, a special value that is employed to represent the values of attributes that will be unknown or not apply to a tuple.

SQL-Injection-Payloads/sqli-misc.txt at master...

github.com

So_buy+and%28SELECT+1+from%28SELECT+count(*),concat((select+%28SELECT+concat%280X7E%2C0X27

SQL Injection Attacks - Macrotone Blogs

macrotoneconsulting.co.uk

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whatsapp windows 8 problem" and(/select 1 /from(/select count(),/concat((/**/union/**/all/**/select/**/null,null,null,null,null--/**/zmxn/select(/select /unhex(/hex(/concat(0x217e21,0x4142433134355a5136324457514146504f4959434644,0x217e21)))) /fr на YouTube:

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