select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
The Background I was trying to solve the fourth realistic mission in hackthissite.org, and couldn't figure out exactly what SQL I should inject into the URL to retrieve the list of emails.
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...
Above is two queries with their results merged by a UNION ALL clause. You will notice that the queries return different columns, one called 'departure' and one called 'arrival'.
A field with a NULL value is one that has been left blank during record creation! How to Test for NULL Values?
What is the difference between … and … and why does the latter not work?
R language supports several null-able values and it is relatively important to understand how these
Не сейчас. Месяц бесплатно. SGs2 imei (null null) решение проблемы. Лунный Енот.
Hello friends this is my first null-byte, today i am going to explain HOW TO RESET ADMIN
NULL values represent missing unknown data. By default, a table column can hold NULL values.