Mysql/php - Query Question -
i have been trying figure out different way complete task on question on website, think maybe making difficult.
here have: table with, , imageid, imagename, galleryid table comments, author, date, imageid
what want do query find of images have galleryid=42. in addition, grab of comments associated each picture (via imageid) , concatenate them in single value. example:
imageid: 1234, imagename: img425, galleryid: 42, comments: cool!|||john smith|||2010-09-06~~nice shot!|||richard clark|||2010-10-01~~i remember run.|||susan edwards|||2010-10-04
i need concatenate of results comments table each image , put them in single value, can parse them via php in body of page.
group_concat() way go, , other answers close. kiss.
select imageid, imagename, galleryid , group_concat( concat_ws('|||', comment.author, comment.date, comment.content) separator '~~' ) comments images join galleries using (galleryid) join comments using (imageid) galleryid = 42 group imageid, imagename, galleryid
note group_concat() has short max length default. may have run
set group_concat_max_len = 65535;
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