Check if field is null

Connect and share knowledge within a single location that is structured and easy to search. I apologize if this is the same as How to check in Apex if a Text field is blank. I posted this anyway because I need confirmation on the approach specifically for a lookup field. The linked question talks only about text field. I am not sure if it is completely safe to consider a lookup field as a text field in this scenario.

This will always give you correct result. Or a better approach what Keith c Suggest store them in id field and then SF will handle them and will throw exception if you assign wrong value. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Check lookup field is null in apex Ask Question. Asked 5 years, 11 months ago. Active 5 years, 11 months ago.

Viewed 26k times. What is the best approach to check if a lookup field is null in apex? Improve this question. Community Bot 1. Prajith Prajith 1, 1 1 gold badge 17 17 silver badges 27 27 bronze badges.

I always use the first approach. Why can I filter properly in the search, but not create a field of the same type of filtering through eval? The field names which contains non-alphanumeric characters dot, dash etc , needs to be enclosed in single quotes, in the right side of the expression for eval and where command.

So, following should work. In the base search OR with search command, you don't need the field name to be enclosed within single quotes, hence it works. View solution in original post. I had tried variations with quotation marks, didn't realize I needed single quotes to make it work. Sign In. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field.

Then, the field will be saved with a NULL value. A field with a NULL value is one that has been left blank during record creation!

Select all records from the Customers where the PostalCode column is empty. We just launched W3Schools videos.