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From "Philip Thompson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9228) Add documentation for Type Cast, Type Conversion and Function Overloading
Date Thu, 23 Apr 2015 15:36:38 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Philip Thompson updated CASSANDRA-9228:
---------------------------------------
    Fix Version/s: 3.0

> 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
>             Fix For: 3.0
>
>
> 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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