999999.9 /**/union/**/all /**/select /**/cast...
SELECT CAST (miles AS INT) FROM Flights -- convert timestamps to text INSERT INTO
security - Sql injection can someone explain this code... - Stack Overflow
What I would like to know why "999999.9", what is "0x39313335313435363237322e39". When this attack works what information would the hackers have or edits would they have done to the database. Last could this attack run over and over again bring down/crash the server?
999999.9 union all select...
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sql - Replace null with 0 in MySQL - Stack Overflow
Yes, by using COALESCE. SELECT COALESCE(null_column, 0) AS null_column FROM whatever; COALESCE goes through the list of values you give it, and returns the first non-null value.
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.
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.
Заметка про NULL / Хабр | select col from ttt where col is not null
Даже выражение NULL != NULL не будет истинным, ведь нельзя однозначно сравнить одну неизвестность с другой. Кстати, ложным это выражение тоже не будет, потому что при вычислении условий Oracle не ограничивается состояниями ИСТИНА и ЛОЖЬ.
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.
и ??= — справочник по C# | Microsoft Docs
Оператор объединения с NULL ?? возвращает значение своего операнда слева, если его значение не равно null.