menu_book Course Curriculum (Apex Complete Course) expand_more
FOR UPDATE
Learn FOR UPDATE in Apex with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.
FOR UPDATE is an atomic Apex topic inside SOQL & SOSL. The example below uses the actual construct named by the lesson rather than a generic placeholder.
Focus on what FOR UPDATE changes: the input, binding, control path, object state, collection, runtime effect, or language contract. Then alter one value and verify that the behavior changes for a reason specific to this feature.
Topic-specific example
Account a=[SELECT Id,Name FROM Account LIMIT 1 FOR UPDATE];
Validate the data scope and transaction impact. A correct example must use the actual query or data-change construct named by the lesson.