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https://issues.apache.org/jira/browse/CASSANDRA-12690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Highstead resolved CASSANDRA-12690.
-----------------------------------
    Resolution: Fixed

> LWT: Inserting Subset of columns returns all columns
> ----------------------------------------------------
>
>                 Key: CASSANDRA-12690
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12690
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>         Environment: 3.x
>            Reporter: Highstead
>            Priority: Minor
>              Labels: transaction, transactions
>
> See: https://github.com/gocql/gocql/issues/792#issuecomment-248983669
> When inserting a subset of the table columns with the use of light weight 
> transactions the cassandra result returns a full set of unordered cassandra 
> column values.  
> SETUP:
> ```
> CREATE TABLE IF NOT EXISTS test.inserttest(
>     key bigint,
>     session_token text,
>     foo text, 
>     bar text,
> PRIMARY KEY(key, event_date, session_token);
> INSERT INTO test.inserttest(key, session_token, foo) VALUES (1, 'myToken', 
> 'baz') IF NOT EXISTS;
> ```
> `insert into test.inserttest(key, session_token, foo) VALUES (1, 'myToken', 
> 'bez') IF NOT EXISTS;`
> Expected result: Returns False, 1, myToken, baz
> Actual result: Returns true and all column values.



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