Wikipedia:People by year
|This page documents an English Wikipedia editing guideline.
Wikipedia:Categorization of people > by year
The same applies for images of non-anonymous people.
The article "Julius Schwartz":
placing the article in:
and sorting it by last name.
- 1 Use of the categories in Wikipedia
- 2 Which category to use
- 3 Templates for the descriptions of the category pages
- 4 Assignment of categories
- 5 Checking sort keys
- 6 Bot problems
- 7 Sample queries
- 8 Maintenance
Use of the categories in Wikipedia
For a discussion about implementing the categories, see Wikipedia talk:People by year/Delete.
Some stats: /Reports/Stats
Which category to use
- Year of birth/death is known.
- Year of birth/death is approximate.
- Year of birth is unknown.
- Year of death is unknown.
Templates for the descriptions of the category pages
The following templates can be used for the text on the category pages:
see also: Template:Ltm
Assignment of categories
The information to assign the categories can partially be extracted from Wikipedia and uploaded by bot. Some of the possibilities are:
With lists in Wikipedia
Lists providing the years:
- Birth or death years:
- Death years:
- Birth and death years:
Articles already categorized in Category:People can be selected and checked for years.
The following articles subcategorized in Category:People are not biographies:
- Articles titled "List of .."
- Articles in categories titled "Lists .."
1. To select categories
- /SQL to find people categories (marginally reliable)
- /List of manually selected categories (used instead)
2. To select biographies:
CREATE TABLE temp_people1 SELECT DISTINCT cur_id, cur_title, cur_text, cur_namespace, 0000 AS YOB, 0000 AS YOD FROM temp_peoplecats, categorylinks, cur WHERE ct_from_name=cl_to AND cl_from=cur_id
3. To find the years mentioned in the articles:
DROP TABLE IF EXISTS temp_years; CREATE TABLE temp_years SELECT cur_id AS y_id, cur_title+1-1 AS y_title, cur_namespace, cur_is_redirect FROM cur WHERE cur_title RLIKE '^[0-9][0-9][0-9][0-9]$' OR cur_title RLIKE '^[0-9][0-9][0-9]$' OR cur_title RLIKE '^[0-9][0-9]$' LIMIT 5000; DELETE FROM temp_years WHERE cur_namespace <>0; DELETE FROM temp_years WHERE cur_is_redirect <>0; ALTER TABLE temp_years DROP cur_namespace, DROP cur_is_redirect;
4.Sample selection, the result needs to be checked manually.
SELECT cur_title, cur_text, MIN(y_title) AS Y1, MAX(y_title) AS Y2, (MAX(y_title) - MIN(y_title)) AS Diff FROM temp_people1, links, temp_years WHERE cur_title LIKE 'James%' AND temp_people1.cur_id=l_from AND l_to=y_id GROUP BY cur_title
- Sample output: Wikipedia:People by year/Reports/Year from article text.
- The result will need to be checked manually.
Checking sort keys
The bot creates a default sort key with the last part of the article title.
This default is not appropriate for:
- Chinese names, Korean names, historical Japanese names
- Some Spanish, French, Dutch, etc. names with "De" or "Van"
- Popes, monarchs, etc.
- Stage names (some)
As some names have been Westernized, it's not necessarily true for all.
For the articles that have already been assigned sort keys, the one assigned by the bot can be compared with the ones added by other users.
The query may turn up more sort keys that need to be fixed in other categories than in Births/Deaths by year. Categories added through template will have a sort key as the page title, the query excludes them. Subcategories in Category:Families are likely to be sorted by first name and need to be ignored as well. Check also: Category:People of the Vietnam War, Category:Icelandic politicians.
SELECT CONCAT('<tr><td>[[', cur_title, ']] ', '<td>[[:Category:', cl1.cl_to, '|', cl1.cl_to ,']] ', '<td>', cl1.cl_sortkey, '<td>[[:Category:', cl2.cl_to, '|', cl2.cl_to, ']] ', '<td>', cl2.cl_sortkey) AS CompTable INTO OUTFILE 'wp_sortkeytest.txt' FROM categorylinks AS cl1, categorylinks AS cl2, cur WHERE (cl1.cl_to LIKE "%births" OR cl1.cl_to LIKE "%deaths") AND cl1.cl_from = cl2.cl_from AND cl1.cl_to <> cl2.cl_to AND cl1.cl_sortkey <> cl2.cl_sortkey AND cl1.cl_from = cur_id # ignore categories added through templates AND cl2.cl_to <> 'People_stubs' AND cl2.cl_to <> 'Writer_stubs' AND cl2.cl_to <> 'Language_stubs' AND cl2.cl_to <> '1911_Britannica' AND cl2.cl_to <> 'NPOV_disputes' AND cl2.cl_to <> 'Unformatted_ice_hockey_player' AND cl2.cl_to <> 'Substubs' AND cl2.cl_to <> 'Articles_to_be_split' AND cl2.cl_to <> 'Cleanup' AND cl2.cl_to <> 'Pages_on_votes_for_deletion' # ignore family cats, e.g. AND cl2.cl_to <> 'The_Rockefellers' AND cl2.cl_to <> 'The_Rothschilds' # ignore categories with sortkey "*", e.g. for [[John Lennon]] in [[:Category:John Lennon]] AND LEFT(cl2.cl_sortkey,1)<>'*' # ignore differences beyond the first 4 char. AND LEFT(cl1.cl_sortkey, 4)<>LEFT(cl2.cl_sortkey, 4) ORDER BY cur_id
In these cases, the sort keys need be edited manually (for now).
See also Wikipedia:bots for general precautions regarding the use of bots.
The birth/death year category uploaded by bot is not correct.
- Please correct it.
- If the bot note reads "Based on List of people by name", the year there is being used. It's likely that:
- a disambiguating link/page is necessary, the years used being those of another person.
- another page/list gives incorrect years. Please update them there as well.
- If no source is given, the manual check of the input wasn't accurate.
Add the sample to this page if the type of problem hasn't been identified.
The sort key is not correct.
- If there is no other category assigned to the article, please correct it. If the category of names isn't identified yet, please mention it above.
- If the article has already another category, the sort key may eventually be fixed to match it.
- In more recent additions, the sort key is based on existing categories (e.g. Peers, but obviously not People stubs). Thus other existing categories may need be corrected as well.
There are multiple categories for birth/death These are generally due to conflicting sortkeys or sources used for the years. Uploads are now being checked based on the last to avoid that categories are added to articles already categorized, and past uploaded manually corrected. Please remove duplicated categories that may still exist.
- All these articles are identified and manually checked based on the last available database download:
- Articles with different years are identified with a separate report, e.g. Hans Richter, Sam Jaffe (former version). If it's likely that these are eventually being split, the categories are left on the page.
Builds a table with article title, years, age, other categories, etc.
See: /SQL for table
SELECT DISTINCT CONCAT('#[[',cur_title,']]') LIST INTO OUTFILE 'wp_people_by_year_all.txt' FROM cur, categorylinks WHERE (cl_to LIKE '%deaths' OR cl_to LIKE '%births') AND cl_from=cur_id AND cl_sortkey NOT LIKE '*%' ORDER BY cl_sortkey LIMIT 10000
- Sample output: Wikipedia:People by year/Reports/All
All with years
With birth and death years:
SELECT CONCAT('*[[', REPLACE(cur_title,'_',' '), ']] ([[:Category:', cl1.cl_to, '|', LEFT(cl1.cl_to,4) ,']] – [[:Category:', cl2.cl_to, '|', LEFT(cl2.cl_to,4), ']])') AS CompTable INTO OUTFILE 'wp_name_(born-died).txt' #add directory/path FROM categorylinks AS cl1, categorylinks AS cl2, cur WHERE cl1.cl_to LIKE "%births" AND cl1.cl_from = cl2.cl_from AND cl2.cl_to LIKE "%deaths" AND cl1.cl_from = cur.cur_id ORDER BY cl1.cl_sortkey
- Sample output: Wikipedia:People by year/Reports/Name (born-died)
With birth and death years and other category assigned to the article:
Oldest persons with biographies in Wikipedia:
SELECT CONCAT('*[[', REPLACE(cur_title,'_',' '), ']] ', (cl2.cl_to - cl1.cl_to), ' ([[:Category:', cl1.cl_to, '|', LEFT(cl1.cl_to,4) ,']] – [[:Category:', cl2.cl_to, '|', LEFT(cl2.cl_to,4), ']])') AS CompTable INTO OUTFILE 'wp_oldest_(born-died).txt' #add directory/path FROM categorylinks AS cl1, categorylinks AS cl2, cur WHERE cl1.cl_to LIKE "%births" AND cl1.cl_from = cl2.cl_from AND cl2.cl_to LIKE "%deaths" AND cl1.cl_from = cur.cur_id ORDER BY (cl2.cl_to - cl1.cl_to) DESC LIMIT 10
- Sample output: Wikipedia:People by year/Reports/Oldest
- Similar: Wikipedia:People by year/Reports/Youngest
Biographies available for people alive in a given decade:
Disambiguation pages with year categories
SELECT DISTINCT CONCAT('#[[', REPLACE(p_title,'_',' '), ']]') INTO OUTFILE 'wp_disambig_pages.txt' FROM temp_peopleyr, categorylinks WHERE p_id=cl_from AND cl_to = 'Disambiguation'
- Output: /Reports/Disambig_pages
Articles to be categorized
Articles in a subcategory of Category:People, but without year of birth/death category:
No other categories
Articles in no other subcategory of Category:People, than birth/death:
SELECT DISTINCT CONCAT('*[[', REPLACE(p_title, '_', ' '), ']] ', IF(y2='0000', CONCAT('(born [[', y1,']])'), IF(y1='0000', CONCAT('(died [[', y2,']])'), CONCAT('([[', y1, ']]-[[',y2,']])'))), IF(p_categories='', '', CONCAT(', ', p_categories)) )INTO OUTFILE 'wp_no_other_cat.txt' FROM temp_peopleyr WHERE p_cats='00' ORDER BY p_sortkey LIMIT 20000
- Output: /Reports/No_other_categories
Articles with multiple (and different) birth or death categories:
SELECT p_title, p_id, RIGHT(cl_to, 6), Count(*) FROM temp_peopleyr, categorylinks WHERE p_id=cl_from AND cl_to LIKE '%births' # or deaths instead GROUP BY p_title LIMIT 100000
This does not identify articles with twice the same year of birth (or death) category.
- Missing year of birth