Learning Apache Cassandra by Mat Brown
Author:Mat Brown [Brown, Mat]
Language: eng
Format: epub, mobi
Publisher: Packt Publishing
Published: 2015-02-25T05:00:00+00:00
In both cases, the query simply instructs Cassandra to set the email and encrypted_password columns to the given values in the row whose primary key is alice.
INSERT and UPDATE are not entirely redundant; however, each provides certain capabilities that the other does not. For instance, only INSERT supports the IF NOT EXISTS clause that we explored earlier. UPDATE queries also have distinctive functionality, not the least of which is conditional updates.
Optimistic locking with conditional updates
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