How to perform an update query from a UDF that receives parameters from multiple tables?

Use a CTE, contruct a query that uses the neede tables and returns the wanted rows. Then update the tsble using that CTE.

The UDF really doesn't care where the parameters come from.  It's up to the calling operation to pass the correct parameter(s).

Can you clarify what you're trying to do?

Hi Experts,

First thanks for replying..

Perhaps you can help me apply your suggestions given the details below:

A- the table/field I'm looking to update is EmployeesJcahoInfo.EmployeeID

(So in other words the SQL statement should be something like "Update EmployeesJcahoInfo.EmployeeID set MyField = False where EmployeesMissingDocs (Param1,Param2,Param3..) = '1')

B- the query joins needed for the UDF parameters are as follows

           

dbo.CoreMandatory RIGHT OUTER JOIN
                         dbo.Employeestbl ON dbo.CoreMandatory.EmployeeID = dbo.Employeestbl.ID LEFT OUTER JOIN
                         dbo.Facilitiestbl LEFT OUTER JOIN
                         dbo.FacilitiesDocumentsRequirements ON dbo.Facilitiestbl.ID = dbo.FacilitiesDocumentsRequirements.FacilityID RIGHT OUTER JOIN
                         dbo.TovInfo ON dbo.Facilitiestbl.Tov_ID1 = dbo.TovInfo.TovCode ON dbo.Employeestbl.ID = dbo.TovInfo.EmployeeID 

Select allOpen in new window

C- the list of parameters is quite long (I just listed in OQ the first few), I guess you dont need them, will figure this out already once I have an example.

D- let me know if you need more info.

Thanks,
Ben

@KDO,

The UDF really doesn't care where the parameters come from.

Well if they would all come from one table (let say EmployeesJcahoInfo), I would have no problem executing it like this

Update EmployeesJcahoInfo.EmployeeID set MyField = False where EmployeesMissingDocs (EmployeesJcahoInfo.Field1,EmployeesJcahoInfo.Field2,EmployeesJcahoInfo.Field3..) = '1')

Select allOpen in new window

The whole issue is how to get those parameters supplied, and if I try to do this on a joined sql results then it becomes non updatable.

Thanks,
Ben

@Kdo,

write the update statement without relying on the UDF......WHERE
    condition(s)

Not sure what you mean by that, as the where condition is the point I need to use the UDF for?

SQL Server allows you to join tables in an UPDATE statement

Are you saying I can have all those outer joins shown above (ID: 41738208) embedded in this update statement?
Thanks,
Ben

Did you look into my post?

>> Are you saying I can have all those outer joins shown above (ID: 41738208) embedded in this update statement?

Sure.  All modern database engines support SQL that allows you to join values in a sub-query, though vendors generally don't agree on the correct form so the statements don't always work across platforms without some changes.

Sharath posted an example earlier, too.

Kent

@Sharath, @Kdo,

Testing it, will let you know..

Thanks,
Ben

Worked, thank you guys!