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Apex Complete Course / SOQL & SOSL

FOR UPDATE

Learn FOR UPDATE in Apex with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.

10 min read • Beginner

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

apex-03-10-for-update.cls
apex Try It Live
Account a=[SELECT Id,Name FROM Account LIMIT 1 FOR UPDATE];
Edge case / engineering note

Validate the data scope and transaction impact. A correct example must use the actual query or data-change construct named by the lesson.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content