我有这个问询(和结果):
select articles.article_id, articles.article_text, article_photos.photo_filename
from
articles
left join article_photos
on article_photos.article_id=articles.article_id
>>> results
1,some_text,photo1.jpg
1,some_text,photo2.jpg
1,some_text,photo3.jpg
我如何吸收小组参加,以便我能够:
>>> results
1,some_text,photo1.jpg
NULL,NULL,photo2.jpg
NULL,NULL,photo3.jpg
基本上,我有一张带有文章的表格,有图像的相关表格。 文章可以有多种图像,因此,我试图在休息期间在屏幕上打印,而不要在有多种图像时重复。
select articles.article_id, articles.article_text, group_concat(article_photos.photo_filename)
from articles
left join article_photos
on article_photos.article_id=articles.article_id
group by articles.article_id, articles.article_text
返回
1 some_text photo1.jpg,photo2.jpg,photo3.jpg
这并不是你在预期结果中所显示的。 你们是否要求这样做?
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