Nimi Wariboko Jr. created CASSANDRA-10537:
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             Summary: CONTAINS and CONTAINS KEY support for Lightweight 
Transactions
                 Key: CASSANDRA-10537
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10537
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Nimi Wariboko Jr.
             Fix For: 2.1.x


Conditional updates currently do not support CONTAINS and CONTAINS KEY 
conditions. Queries such as 

{{UPDATE mytable SET somefield = 4 WHERE pk = 'pkv' IF set_column CONTAINS 5;}}

are not possible.

Would it also be possible to support the negation of these (ex. testing that a 
value does not exist inside a set)?



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