mysql - Site has been hacked via SQL Injection - Stack Overflow
0x31303235343830303536 is NULL - they are just matching the number of columns in your existing query. If you had SELECT * FROM users and users had 4 columns, the UNION must also have 4 columns. As a result, they just used `NULL values to populate those columns.
SQLmap --file-write issue · Issue #2621 · sqlmapproject/sqlmap · GitHub
Type: UNION query Title: Generic UNION query (NULL) - 4 columns Payload: id=-4130 UNION ALL SELECT NULL,NULL,CONCAT(0x71627a7071
sql - Replace null with 0 in MySQL - Stack Overflow
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?
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Шпаргалка по SQL инъекциям | DefconRU
Синтаксис: 0xHEX_ЧИСЛО (SM): SELECT CHAR(0x66) (S) SELECT 0x5045 (это не число, а строка) (M) SELECT 0x50 + 0x45 (теперь это
SELECT (обучающий этап) задачи по SQL запросам
exercises-on-sql.blogspot.com
...'null' union all select distinct numguns, ship from classes left join outcomes on classes.class
Sqlmap: SQL-инъекции - это просто - «Хакер»
Классический вариант внедрения SQL-кода, когда в уязвимый параметр передается выражение, начинающееся с "UNION ALL SELECT".
CAST and CONVERT (Transact-SQL) - SQL Server | Microsoft Docs
For a style value of NULL, NULL is returned. data_type determines the range. Return types.
SQL UNION Operator
The UNION operator is used to combine the result-set of two or more SELECT statements. Each SELECT statement within UNION must have the
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.