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https://issues.apache.org/jira/browse/CASSANDRA-17762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-17762:
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Bug Category: Parent values: Correctness(12982)
Complexity: Normal
Discovered By: User Report
Fix Version/s: 4.x
Severity: Normal
Status: Open (was: Triage Needed)
> LWT IF col = NULL is inconsistent with SQL NULL
> -----------------------------------------------
>
> Key: CASSANDRA-17762
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17762
> Project: Cassandra
> Issue Type: Bug
> Components: CQL/Semantics
> Reporter: Avi Kivity
> Priority: Normal
> Fix For: 4.x
>
>
> In SQL, any comparison with NULL is NULL, which is interpreted as FALSE in a
> condition. To test for NULLness, you use IS NULL or IS NOT NULL.
> But LWT uses IF col = NULL as a NULLness test. This is likely to confuse
> people coming from SQL and hamper attempts to extend the dialect.
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