Change the conditions when the parameter is null

I am building an Apex application where the client will fill out a form to get the data. I want to know if there is a way to modify the WHERE clause based on the selections of the customer allows shaped.

Here is the scenerio:

The user form has 3 fields, which should all be able to be null to return all results. We will call them P10_A, P10_B and P10_C

If the user selects a value for all three, where clause is:

where column_a =: P10_A
and column_b =: P10_B
and column_c =: P10_C.

It works correctly if the user chooses a value for everyone, but if they do not choose a value for P10_B, I need my query to edit the where clause is

where column_a =: P10_A
and column_c =: P10_C.

I have not found a way to do this, so I put my question to you. Is it possible to selectively include certain parts of the place where clause based on the presence of null values?

Hello

You must change your where clause to something like this:

where (column_a = :P10_A OR :P10_A IS NULL)
and (column_b = :P10_B OR :P10_B IS NULL)
and ( column_c = :P10_C OR :P10_C IS NULL)

I hope this helps!

--
Paulo Vale
http://Apex-notes.blogspot.com

Tags: Database

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