qndbq7bbxilyCzFA') UNION ALL SELECT NULL,NULL,NULL,CONCAT(0x716e646271,IFNULL(CAST(grantee AS CHAR),0x20),0x716a716771),NULL FROM INFORMATION_SCHEMA.USER_PRIVILEGES#qjqgq.
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Title: MySQL UNION query (NULL) - 2 columns. Payload: option=com_osproperty&no_html=1
...Null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,concat(0x716b756a71
Note: A NULL value is different from a zero value or a field that contains spaces.
The reasoning is that a null means "unknown", so the result of any comparison to a null is also "unknown". So you'll get no hit on rows by coding where my_column = null. SQL provides the special syntax for testing if a column is null, via is null and is not null, which is a special condition to test for a...
I am getting NULL values in the results of an operation in MySQL. Is there a way to convert the NULL values into the value 0?
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.
В.C. Проверка значений NULL в предложении WHERETesting for NULL in a WHERE clause. Не используйте для поиска значений NULL выражение