Question

I have a table tv_programs (prog_id, channel_id, prog_name, prog_start_date, prog_end_date)

I would like to have, for each channel, the very next program that will start after the one being broadcast now. So one row per channel.

I tried

Select * from tv_programs where prog_start_date > NOW()

This gives me all programs for all channels starting after now.

Answer 1

you have to GROUP BY channel_id

so the final query:

SELECT * 
FROM tv_programs 
WHERE prog_start_date > NOW() 
GROUP BY channel_id
ORDER BY prog_start_date ASC

will return the program to start the sooner for each channel