c_pattle Posted September 1, 2010 Share Posted September 1, 2010 I have two tables. The first is a list of articles where the primary key in the article number. The second table is a list of ratings for those article where again the primary key is the article number (so I can link the two). I'm trying to use a sql command to select all of the information in the articles table along with the average rating for that article. I have this so far which works however it only gives me the first article and no articles after that. I think the problem is that the avg(ratings.score) is the average of ALL of the articles rather than for just one. SELECT AVG(ratings.score), articles.* FROM ratings, articles where ratings.article_number = articles.article_number; Let me know if I didn't explain this well enough. Thanks for any help. Quote Link to comment https://forums.phpfreaks.com/topic/212309-phpmysql-help/ Share on other sites More sharing options...
RussellReal Posted September 2, 2010 Share Posted September 2, 2010 you could do a sub query like.. SELECT (SELECT AVG(ratings.score) FROM ratings WHERE ratings.article_id = articles.id) As average FROM articles; a join will not really work Quote Link to comment https://forums.phpfreaks.com/topic/212309-phpmysql-help/#findComment-1106246 Share on other sites More sharing options...
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