SQL using If Not Null on a Concatenation - Stack Overflow
If you use Postgres, concat_ws() is what you are looking for
Replacing NULL with 0 in a SQL server query - Stack Overflow
When you want to replace a possibly null column with something else, use IsNull. SELECT ISNULL(myColumn, 0 ) FROM myTable. This will put a 0 in myColumn if it is null in the first place.
sql injection "union select null" - CodeProject
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...
Заметка про NULL / Хабр | select col from ttt where col is not null
Существуют специальные операторы IS NULL и IS NOT NULL, которые позволяют производить сравнения с NULLами.
mysql - SQL Injection attack - What does this do? - Stack Overflow
A better example of how this may be used: > SELECT COUNT(*),CONCAT((SELECT CONCAT(user,password) FROM mysql.user LIMIT 1), > 0x20, FLOOR(RAND(0)*2)) x > FROM information_schema.tables GROUP BY x; ERROR 1062 (23000)...
NewsBee CMS 1.4 SQL Injection
# Type: UNION query # Demo: http://target/NewsBee/admin/home-text-edit.php?id=5 # Payload: id=-1714' UNION ALL SELECT NULL,NULL...
Проблема при установке WINXP: Синий экран: a problem has been...
Если при установке Windows XP или любой другой операционной системы возникает синий экран c надписью: a problem has been detected and windows has been shut down to prevent damage to your computer.
ORA-03137: : [kpoal8Check-5] [0] [0x000000000] ... | Oracle Community
Victor Endara 18.08.2017 21:59.
Шпаргалка по SQL инъекциям | DefconRU
Синтаксис: 0xHEX_ЧИСЛО (SM): SELECT CHAR(0x66) (S) SELECT 0x5045 (это не число, а строка) (M) SELECT 0x50 + 0x45 (теперь это число) (M)
Внедрение SQL-кода — Википедия
-1 UNION SELECT group_concat(username, 0x3a, password) FROM admin.