... cAsT(0x393133353134353632322e39 as char),' did not match any products. ... 999999.9' /**/uNiOn/**/aLl /**/sElEcT null,null,null,null,null,null,null,null,null ...
... union/all /select /cast(0x393133353134353632312e39 as char),/cast(0x393133353134353632322e39 as char),/-8737/**/union/**/all/**/select/**/null,null,null,null ...
As shown below, I need not null values to be at the start of all output fields.
In postgres, I'm getting an error when I try to union two tables where one table has a column (Amount) containing double precision data type...
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.
Then in the second table I have select ..., null as opt from... I know that I could have an empty string with '' as
What is the difference between … and … and why does the latter not work?
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...
Note: A NULL value is different from a zero value or a field that contains spaces.
The IS NOT NULL condition is used in SQL to test for a non-NULL value.
E.g. null + null + 1 = 1 null + null + null = null. The problem is that the first expression yields null.
R language supports several null-able values and it is relatively important to understand how these