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Posted to commits@cassandra.apache.org by "Benjamin Lerer (JIRA)" <ji...@apache.org> on 2016/09/16 07:19:21 UTC
[jira] [Updated] (CASSANDRA-9228) Add documentation for Type Cast,
Type Conversion and Function Overloading
[ https://issues.apache.org/jira/browse/CASSANDRA-9228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Benjamin Lerer updated CASSANDRA-9228:
--------------------------------------
Assignee: (was: Benjamin Lerer)
Fix Version/s: (was: 3.x)
> Add documentation for Type Cast, Type Conversion and Function Overloading
> -------------------------------------------------------------------------
>
> Key: CASSANDRA-9228
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9228
> Project: Cassandra
> Issue Type: Task
> Reporter: Michaël Figuière
> Priority: Minor
>
> While digging around UDF overloading and type conversion it appeared that several topics aren't currently documented in the CQL spec:
> * Explicit type casting has been added with CASSANDRA-5226 in Cassandra 1.2.2 and is currently not explained in the spec.
> * UDFs support overloading, this should be explained in the CQL spec, along with a clear definition of what is considered as an ambiguous function call.
> * In this context it also becomes important to document the type conversion rules, that is, which type A can be converted to which type B without raising an error.
> * Not directly related but it would also be useful to document the column type changes that are allowed in {{ALTER TABLE}} statements.
> All these fairly important topics are currently not obvious or hard to figure out for the user.
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