Hi, I have 4-5 different types of models which can be tagged. So, in the taggings table should I declare a multicolumn index on [taggable_type, taggable_id] or a single column index on [taggable_id]. What are the pros and cons of either, and which one is preferred?
If multicolumn, then in what order, i.e., [taggable_type, taggable_id] or should it be [taggable_id, taggable_type]? I have another table for tracking views for different objects, and this time there are 3 columns [viewable_type, viewable_id, user_id], so should this one be a 3 column index? Please suggest something. Thanks in advance. -- Surendra Singhi http://ssinghi.kreeti.com, http://www.kreeti.com Read my blog at: http://cuttingtheredtape.blogspot.com/ ,---- | Great wits are sure to madness near allied, | And thin partitions do their bounds divide. | | (John Dryden, Absalom and Achitophel, 1681) `---- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
