SQL NULL Values - IS NULL and IS NOT NULL
Note: A NULL value is different from a zero value or a field that contains spaces.
999999.9 /**/union/**/all /**/select /**/cast...
SELECT CAST (miles AS INT) FROM Flights -- convert timestamps to text INSERT INTO mytable (text_column) VALUES ... Now you can chat with who search for : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char.
sql - Union to handle NULL values - Stack Overflow
select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
mysql - Merging UNION ALL rows to remove NULL... - Stack Overflow
SELECT journey.id, null AS departure, TIME_FORMAT(ADDTIME(journey.departure, SEC_TO_TIME(SUM(l1.elapsed))), '%H:%i') AS arrival FROM
sql injection "union select null" - CodeProject | To display as
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...
NULL Values In SQL | SQL UNION Clause - DataFlair
In general, every NULL value is taken into account to vary from each alternative NULL in the database.
3) union all select null, null, null, null, null, null, null, null, null, null...
Number of null-s on change between passed and failed queries is the one attacker looks for.
Null character - Wikipedia
The null character (also null terminator or null byte) is a control character with the value zero. It is present in many character sets, including ISO/IEC 646 (or ASCII), the C0 control code, the Universal Coded Character Set (or Unicode), and EBCDIC.
Работа с NULL-значениями « Язык запросов SQL
Тем не менее, NULL, как NULL-значение, часто используется в SQL. Предположим, появился покупатель, которому еще не назначен продавец.
и ??= — справочник по C# | Microsoft Docs
Оператор объединения с NULL ?? возвращает значение своего операнда слева, если его значение не равно null.