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Question

I have linked my database to my project, have called the entity classes from the db and bound the db to a jtable. That's all well and good. But now I need to manipulate the database.

(I cannot submit any code for overview, as I do not know where to start)

What I have done so far

1. Insertion of a Item
2. Deleting of a Item
3. Updating of a Item

I now need to extract the first, second and last record of the database. I am using the .obj file to manipulate the Derby DB.

Answer 1

you can have one query to perform selection of record 1,2 and last together doing so. I have supposed you have a date field to know the order of the records first/last records. :D

SELECT *
FROM mytable
WHERE <conditions>
ORDER BY date DESC
LIMIT 2

UNION ALL

SELECT *
FROM mytable
WHERE <conditions>
ORDER BY date ASC    
LIMIT 1