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From "Tiago R. Espinha (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4192) OFFSET and FETCH FIRST documentation improvement
Date Mon, 27 Apr 2009 16:47:30 GMT
OFFSET and FETCH FIRST documentation improvement
------------------------------------------------

                 Key: DERBY-4192
                 URL: https://issues.apache.org/jira/browse/DERBY-4192
             Project: Derby
          Issue Type: Improvement
    Affects Versions: 10.5.1.1
            Reporter: Tiago R. Espinha
            Priority: Minor


I have a suggestion regarding the documentation for the OFFSET and FETCH FIRST documentation.
On these documents, we have three SQL examples on the usage of these clauses. I suggest that
we add a brief description of what each clause does.

This might help the users to have a better understanding at first of how the said clauses
work.

Here are the examples with a possible description:

-- This query fetches the first row from T
SELECT * FROM T FETCH FIRST ROW ONLY;

-- This query skips the first 10 rows and fetches the following 10.
-- It will fetch rows 11 through 20 (inclusive) from the table T, sorted by I
SELECT * FROM T ORDER BY I OFFSET 10 ROWS FETCH NEXT 10 ROWS ONLY;

-- This query skips the first 100 rows from T.
-- If the table has less than 101 records, then an empty result set is returned.
SELECT * FROM T OFFSET 100 ROWS;

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