Comments on: PHP-MySql: Select previous row and next row from current ID

By: sivan

sivan — Sun, 18 Jul 2010 22:30:27 +0000

How to sort by string instead of ID?

By: Jamie

Jamie — Mon, 10 May 2010 12:13:15 +0000

just to say for some reason my SQL didn’t come out right in the reply above..

By: Jamie

Jamie — Mon, 10 May 2010 12:12:15 +0000

Very smart!

Like the others though, I’m trying to verify if the next and previous results in the DB the easy way. I figured I could cheat doing this:

$Query = “select * from `welcome_images` where `id`’$_HTTP[image]‘ order by `id` asc limit 3″

($_HTTP = $_GET + $_POST)

Unfortunately.. it doesn’t work!

I could use 3 queries and test all 3 of them but .. thats the long hard undynamic way!

By: Lings

Lings — Sun, 09 May 2010 20:16:52 +0000

Do the same but change the date to timestamp strtotime then compare sizes.

By: vandai

vandai — Tue, 30 Mar 2010 07:19:18 +0000

your welcome..
hope this is usefull..

By: Andreas

Andreas — Mon, 29 Mar 2010 20:07:29 +0000

Thanks a lot for writing this. I was looking for a good solution to getting prev/next rows and this is perfect!

By: dr.emi

dr.emi — Fri, 19 Mar 2010 10:30:25 +0000

thank you so much friend!
your SQL code, very usefull for me

By: vandai

vandai — Fri, 12 Feb 2010 07:23:32 +0000

will result empty or null data.
see my previous comment.

By: haris

haris — Fri, 12 Feb 2010 07:15:20 +0000

How to fix if previous / next data is empty?

By: Markus

Markus — Sun, 09 Aug 2009 13:14:20 +0000

wellwell the editor cut half of my query… I’m giving up

By: Markus

Markus — Sun, 09 Aug 2009 13:13:32 +0000

UNION example (including a subquery to get sorting for certain ID.

(SELECT sorting
FROM table
WHERE sorting (SELECT sorting FROM table WHERE itemid = ?)
AND groupid = ?
ORDER BY sorting ASC
LIMIT 1)

By: Markus

Markus — Sun, 09 Aug 2009 13:03:27 +0000

But you could UNION ALL the two queries if you wished to retrieve both values in one query.

By: Markus

Markus — Sun, 09 Aug 2009 13:01:33 +0000

forget about it, of course not.

By: Markus

Markus — Sun, 09 Aug 2009 12:26:43 +0000

Couldn’t I get the previous and next items in one query by changing the limit to 3 and using the first and third row of the resultset?

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