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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6725) Add a system function which returns the name of the database.
Date Wed, 15 Oct 2014 12:00:36 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172290#comment-14172290
] 

Rick Hillegas commented on DERBY-6725:
--------------------------------------

Hi Mamta,

MySQL has a function called database() which prints out database names. But a "database" in
MySQL is what ANSI/ISO calls a "schema". The functions in SYSCS_UTIL follow the convention
of separating words with underscores. So I think a good name would be SYSCS_UTIL.DATABASE_NAME.

The SQL Standard has a vague concept of "catalog", which is close to the Derby concept of
"database". And there is a SQL Standard builtin function called CURRENT_CATALOG. However,
there are all sorts of JDBC metadata calls which take a catalog argument, which we ignore.
I think that people would expect us to accept non-null values for catalog arguments if we
introduced the concept of a Derby catalog.

Thanks,
-Rick

> Add a system function which returns the name of the database.
> -------------------------------------------------------------
>
>                 Key: DERBY-6725
>                 URL: https://issues.apache.org/jira/browse/DERBY-6725
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.12.0.0
>            Reporter: Rick Hillegas
>            Assignee: Mamta A. Satoor
>
> Got this request in private conversation with a user. Other databases provide this functionality.
Seems straightforward to add.



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