when using group_concat in mysql it will fetching limited set of data

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hi all...
i have a query like this :

SQL

SELECT group_concat( DISTINCT '',`fromfirstname`,': ','',`message` SEPARATOR '<br />' ) as Message,`fromusername`,`tousername`,`sessionname`,tofirstname,concat(DATE_FORMAT(`sentdate`,'%W , %b %d , %Y '),' ',`senttime`) as DateandTime FROM `tableins` WHERE  ((fromusername='" + sess + "' or tousername='" + toid + "') OR (fromusername='" + toid + "' or tousername='" + sess + "')) AND sentdate='" + DateTime.Now.ToString("yyyy-MM-dd") + "' GROUP BY `sessionname` ORDER BY `id` DESC

it will returns upto some limited charecters here my problem is i need to get all the data presented in table. i was suffered a lot with this issue..
can any one help me please....
thanks in advance

Posted 1-Mar-12 0:49am

tulasiram3975

Updated 5-Mar-12 20:45pm

v3

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E.F. Nijboer · Accepted Answer · 2012-03-05T22:01:00

Solution 1

Here info on how to overcome this limit (of 1024) by concatenating multiple group_concat results.
http://code.openark.org/blog/mysql/sql-trick-overcoming-group_concat-limitation-in-special-cases[^]

You could also change the group_concat_max_len system variable to meet your needs.

Good luck!

Posted 5-Mar-12 22:01pm

E.F. Nijboer

Updated 5-Mar-12 22:03pm

v2

Comments

tulasiram3975 7-Mar-12 1:14am

Thanks U So much....

E.F. Nijboer 7-Mar-12 3:25am

Your very welcome :)