select cast (2000 as type of quint) from rdb$database select cast (2000 as int) from rdb$database. If TYPE OF is used with a (VAR)CHAR type, its character.
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
Перевод отдельных слов, фраз, а также целых текстов и веб-страниц (английский, немецкий, французский, испанский, польский и др.).
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Оба UNION и UNION ALL объединяют результат двух разных SQL.
11223344) UNION SELECT NULL,NULL,NULL,NULL WHERE 1=2 –- Если нет ошибки, значит синтаксис верный, т.е. используется MS SQL Server.
So, as it's being used a lot, I would submit my answer. In my opinion, the aim of these requests is to check the presence or absence of a sql injection.
'999999.9' /**/uNiOn/**/aLl /**/sElEcT 0x393133353134353632312e39,0x393133353134353632322e39,0x393133353134353632332e39 and '0'='' için Arama Sonuçları.
You can clearly see rules containing keywords "select", "union", "all" etc.