Question

I would appreciate your support to understand what is wrong with the code below:

SELECT [Name] As Milestone, [Start], [Outgoing tasks] As OTask 
FROM [Sheet1$] 
WHERE [Main project] = 'Company A' AND [Main link] = 'Project 1' 
AND [Task class] = 'Company' 
AND [Start] > (SELECT [Start] 
               FROM [Sheet1$] 
               WHERE [Main project] = 'Company A' 
               AND [Main link] = 'Project 1' 
               AND [Name] = OTask 
               AND [Incoming tasks] = Milestone)

What I am actually trying to do is getting the registry (Name) which happens after its successor (Outgoing tasks).

Is there an issue with my parameters (Milestone and OTask)?

ERROR: NO VALUE GIVEN FOR ONE OR MORE REQUIRED PARAMETERS

Thanks!!!

Answer 1

The problem is that you use your alias in your where condition.

It should look like this instead

SELECT [Name] As Milestone, [Start], [Outgoing tasks] As OTask 
FROM [Sheet1$] 
WHERE [Main project] = 'Company A' AND [Main link] = 'Project 1' 
AND [Task class] = 'Company' 
AND [Start] > (SELECT [Start] 
               FROM [Sheet1$] 
               WHERE [Main project] = 'Company A' 
               AND [Main link] = 'Project 1' 
               AND [Name] = [Outgoing tasks]
               AND [Incoming tasks] = [Name])

You have to replace OTask by [Outgoing tasks] and Milestone by [Name]