Поиск Google ничего не нашел

mysql - Site has been hacked via SQL Injection - Stack Overflow

stackoverflow.com

If you had SELECT * FROM users and users had 4 columns, the UNION must also have 4 columns. As a result, they just used `NULL values to populate those columns.

oracle - NOT IN selection with NULL values - Stack Overflow

stackoverflow.com

data2(id, val) as (select 1, null from dual union all select 2, '2' from dual).

inurl admin login asp bsnl and sElEcT 1 fRoM sElEcT count cOnCaT...

www.chatword.org

Connecting People With Search Keywords You Can Contact With Us If You Have illegal Keywords to Ban From Our System.

Confusing SQL error in SELECT NULL, *, NULL, NULL - Stack Overflow

stackoverflow.com

UNION ALL SELECT NULL, *, NULL, NULL FROM email. I understand what this does and why; the hacker needs to create a query that has the same number

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

dev.mysql.com

The result is NULL if the argument is NULL or not a valid base-64 string. See the description of TO_BASE64() for details about

SELECT (обучающий этап) задачи по SQL запросам

exercises-on-sql.blogspot.com

select name from battles where year(date) not in (select launched from ships where launched is not null). Задание: 44 (Serge I: 2002-12-04). Найдите названия всех кораблей в базе данных, начинающихся с буквы R.

SQL Injection for MySQL – Gingsoft | select, is obvious

gingsoft.com

select, is obvious. null, is just a place holder that is used because a union statement requires that the number of fields match the 1st query that it’s appending to.

MySQL CONCAT() Function

www.w3schools.com

SELECT CONCAT("SQL ", "Tutorial ", "is ", "fun!") AS ConcatenatedString; Try it Yourself ». Definition and Usage. The CONCAT() function adds two or more expressions together. Note: Also look at the CONCAT_WS() function. Syntax.

Заметка про NULL / Хабр | select col from ttt where col is not null

habr.com

IS NULL вернёт истину, если операнд имеет значение NULL и ложь, если он им не является.

SQL NULL Values - IS NULL and IS NOT NULL

www.w3schools.com

SELECT column_names FROM table_name WHERE column_name IS NOT NULL; Demo Database.

Поиск реализован с помощью YandexXML и Google Custom Search API