This query is marked as a draft This query has been published by Herzi Pinki.

SQL

x
 
use dewiki_p; set @ns:=0;
#use commonswiki_p;set @ns:=6;
set @iso1:='SK';
#set @iso2:='' or code
set @iso2:='';
select distinct sqrt((gt_lat - cen_gt_lat)*(gt_lat - cen_gt_lat) + (gt_lon - cen_gt_lon)*(gt_lon - cen_gt_lon)) as distanz_ungefaehr, 
       gt_lat, gt_lon, gt_page_id, gt_name,
       p1.page_namespace as ns,
       p1.page_title as title,
       gt_country,gt_region FROM geo_tags AS g1 JOIN page AS p1 ON g1.gt_page_id = p1.page_id,
       (select avg(gt_lat) cen_gt_lat,avg(gt_lon) cen_gt_lon,count(*) from geo_tags
        where 
            case 
                when @iso2=''
                then gt_country=@iso1
                else gt_country=@iso1 and gt_region=@iso2
                end) as zentrumdavon
        where
            case
                when @iso2=''
                then gt_country=@iso1 
                else gt_country=@iso1 and gt_region=@iso2
                end
       having ns= @ns
       order by 1 desc limit 500;
       
select distinct sqrt((gt_lat - cen_gt_lat)*(gt_lat - cen_gt_lat) + (gt_lon - cen_gt_lon)*(gt_lon - cen_gt_lon)) as distanz_ungefaehr, 
       gt_lat, gt_lon, gt_page_id, gt_name,
       p1.page_namespace as ns,
       p1.page_title as title,
       gt_country,gt_region FROM geo_tags AS g1 JOIN page AS p1 ON g1.gt_page_id = p1.page_id,
       (select avg(gt_lat) cen_gt_lat,avg(gt_lon) cen_gt_lon,count(*) from geo_tags
        where gt_country=@iso1 and gt_region is null
                ) as zentrumdavon
        where gt_country=@iso1 and gt_region is null
       having ns= @ns
       order by 1 desc limit 500;
#and gt_region is null
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