I'm learning more about SQL and have found it helpful already in solving a problem I was going to have to post-fix in PHP, now I've found mysql can do it on retrival.
The query I have is this.
SELECT *
FROM `messages`
LEFT JOIN `users` ON messages.message_by = users.id
WHERE job_id = '135'
ORDER BY message_date DESC
But I want to do this now,开发者_高级运维
SELECT DATE_ADD(`message_date`, INTERVAL 6 HOUR) AS `message_date`, *
FROM `messages`
LEFT JOIN `users` ON messages.message_by = users.id
WHERE job_id = '135'
ORDER BY message_date DESC
Where the date_add part fixes a time zone difference problem, but as I've put that in the select part of the statement I now don't know how to use the , * (and then everything else) it's not working. I don't want to have to list every field I'm after retrieving just because I've added this date fix...
What is a way around it? Thanks.
Just prepend the name of the table and it should work
SELECT DATE_ADD(`message_date`, INTERVAL 6 HOUR) AS `message_date`, messages.*
FROM `messages`
LEFT JOIN `users` ON messages.message_by = users.id
WHERE job_id = '135'
ORDER BY message_date DESC
Also, are you SURE you need to select all of the fields? You can improve speed by only selecting the columns you need.
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