SQL using If Not Null on a Concatenation - Stack Overflow
As @Prdp noted, the answer is RDBMS-specific. What is specific is whether the server treats a zero-length string as being equivalent to NULL, which determines whether concatenating a NULL yields a NULL or not. Generally COALESCE is most concise for PostgreSQL-style empty string handling, and...
sql - Count Returning blank instead of 0 - Stack Overflow
For example: SELECT COUNT(*) FROM (SELECT 'Dummy' AS [Dummy] WHERE 1 = 0) DummyTable. Will return one record with the value '0', where as: SELECT COUNT(*) FROM (SELECT 'Dummy' AS [Dummy] WHERE 1 = 0) DummyTable GROUP BY [Dummy].
SQL COUNT « Язык запросов SQL
Синтаксис функции COUNT: SELECT COUNT(expression) FROM table WHERE predicates; Функция COUNT принимает один из нескольких параметров
My Basic Tricks: PART 1 - Advanced SQL Injection - Bypass 1024...
mybasictricks.blogspot.com
This function returns a string with concatenated non-NULL values from a group and by default it is also limited to
The SQL Injection Knowledge Base | Find Columns from Table Name
AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x GROUP BY CONCAT((SELECT column_name FROM information_schema.columns LIMIT 1),FLOOR
sql server - Purpose of SQL Injection - Server Fault
...labor op99999' union select unhex(hex(version())) -- 'x'='x labor op99999' union select unhex(hex(version())) -- 'x'='x.
SQL Injection Attacks - Macrotone Blogs
Select Category Uncategorized Joomla Company Latest Updates Humour Other Blog Joomla Hints and Tips
Шпаргалка по SQL инъекциям | DefconRU
(M): SELECT CONCAT(login, password) FROM members. 7. Строки без кавычек Есть несколько
25 примеров команды SELECT в MySQL | ИТ Блог.
mysql> SELECT * FROM worker WHERE name LIKE '%ex'
MySQL CONCAT() Function
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.