I have following data in my table "devices" … I executed below query … It returns result given below … How to come out of this so that it should ignore NULL AND result should be …
As shown below, I need not null values to be at the start of all output fields.
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cannot be null.
If I have the table … This will display Firstname-Middlename-Surname e.g. … The second one (Jane’s) displays correct, however since John doesn’t have a middlename, I want it to ignore the second dash.
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?
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.
I have had a look around and seem to have come across a strange issue with SQL Server 2008 R2. I understand that with CONCAT_NULL_YIELDS_NULL = ON means that the following will always...
Union select null, null, null, null, null, null, null from information_schema.tables.
Существуют специальные операторы IS NULL и IS NOT NULL, которые позволяют производить сравнения с NULLами.
Note: A NULL value is different from a zero value or a field that contains spaces.