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by
Alicia Fagerving (WMSE)
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#1 SELECT MIN(rev_id), rev_user_text, rev_user, rev_timestamp, page_title #2 FROM svwiki_p.page p INNER JOIN svwiki_p.categorylinks cl ON p.page_id = cl.cl_from INNER JOIN svwiki_p.revision r ON p.page_id = r.rev_page WHERE p.page_namespace = 0 AND cl.cl_to IN ("Kvinnor") GROUP BY page_id; ORDER BY rev_timestamp; #LINE 1: declare which database fields (columns) you want to include in your output. #You can include any fields from any of the tables you are joining (in this case: page, categorylinks, revision) #LINE 2: declare which wiki you are pulling data from. #In this case, commonswiki_p. You can find a full list here: https://tools.wmflabs.org/tools-info/?dblist=s1.labsdb #LINE 3: join the page table with the categorylinks table on their COMMON KEY, which is the id of the page. #LINE 4: join the page table with the revision table on their COMMON KEY, which is the id of the page. #LINE 5: specify the numeric namespace(s) of the pages you want to get information for. #There is a list of standard namespaces here: https://en.wikipedia.org/wiki/Wikipedia:Namespace #LINE 6: specify the category(ies) that the pages are in. If you wanted to get pages from multipe categories, #you would write the query the same way: AND cl.cl_to IN ("My_first_category", "Another_category") #LINE 7: specify that you want to return the revision information from the FIRST revision to the page. #Revision ids are sequential, so the first revision to a page will have a lower rev_id number #than all the other edits to that page.
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