999999.9" //union//all //select //**/union/**/all/**/select/**/concat..."
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
sql injection "union select null" - CodeProject | To display as
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...
Confusing SQL error in SELECT NULL, *, NULL, NULL - Stack Overflow
UNION ALL SELECT NULL, *, NULL, NULL FROM email. I understand what this does and why; the hacker needs to create a query that has the same number of columns as the query it's being merged with, and shifted around the * to make sure the emails are displayed. That's not my question.
Do you use NULL or 0 (zero) for pointers in C++? - Stack Overflow
NULL, 0, 0.0, '\0', 0x00 and whatelse all translate to the same thing, but are different logical entities in your program. They should be used as such.
c++ - Why is address zero used for the null pointer? - Stack Overflow
How can 0 be used for handling null pointers if that is the case? Why isn't a negative number null instead? Edit: A bunch of good answers.
Заметка про NULL / Хабр | select col from ttt where col is not null
Существуют специальные операторы IS NULL и IS NOT NULL, которые позволяют производить сравнения с NULLами.
SQL Инъекции | Page 797 | ANTICHAT - Security online community
...NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT%28version(),0x3a,user()),NULL
c - What is the difference between a pointer pointing to 0x0 location...
A null pointer constant, as Karlson's answer correctly states, is either an integer constant expression with the value 0 (a simple 0 is the most common
Replace Count* with 0 if Null – SQLServerCentral | Forum
I have the following query that may return null if certain dates are selected, I want to display 0 instead of a blank but cannot figure it out: * I removed the date code to make it easier. SELECT ISNULL(COUNT(*), '0') AS thecount. FROM dbo.table1.
[10.0] ParseError: "null value in column "categ_id" violates not-null...
I investigated the problem with my colleague Andrea and the error occurred because a not-null constraint was set when installing the product_dimension