sql - CONCAT'ing NULL fields - Stack Overflow
I have a table with three fields, FirstName, LastName and Email. Here's some dummy data: … Now, if I do: … Vitals for Joe is null, as there is a single null field. How do you overcome this behaviour?
9240 union all select null, null, null, null, concat...
-9240 UNION ALL SELECT NULL,NULL,NULL,NULL,CONCAT(0x717a716b71,0x5545577754584c4278524e46714441554748637367766d47526c6470446562764271454348557674,0x7176787a71)-- juXq.
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MySQL CONCAT() Function
SELECT CONCAT("SQL ", "Tutorial ", "is ", "fun!") AS ConcatenatedString; Try it Yourself ». Definition and Usage. The CONCAT() function adds two or more expressions together.
PayloadsAllTheThings/MySQL Injection.md at master...
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Заметка про NULL / Хабр
Существуют специальные операторы IS NULL и IS NOT NULL, которые позволяют производить сравнения с NULLами.
Payload: id=-3095 UNION ALL SELECT CONCAT(0x716a6a6b71...)
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sql injection "union select null" - CodeProject
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...