Casting BLOBs: Successful ... 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 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...
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 of columns as the query it's being merged with, and shifted around the * to make sure the emails are displayed. That's not my question.
...NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULl, NULL-- Можно использовать CAST
Best Result For : 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as char --. تفسير فرط السبحة في المنام.
Aynmarie And All The Hanks all char all american woman all booty ann all Dayaanna ... 999999.9 uNiOn aLl sElEcT cAsT 0x393133353134353632312e39 as.
...NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT%28version(),0x3a,user
Логические операции и NULL. Обычно, состояние НЕИЗВЕСТНО обрабатывается так же, как ЛОЖЬ. Например, если вы выбираете строки из таблицы и вычисление условия x = NULL в предложении WHERE дало результат НЕИЗВЕСТНО, то вы не получите ни одной строки.
NULL is allowed to expand to any null pointer constant, so it could be 0, 0L (etc.) or nullptr, but (again) cannot be any non-zero integer, nor can it
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this