您可以使用条件聚合：
select country, sum(case when position = 1 then 1 else 0 end) as pos_1, sum(case when position = 2 then 1 else 0 end) as pos_2, sum(case when position = 3 then 1 else 0 end) as pos_3from tgroup by countryorder by sum(pos) asc;
您可以使用条件聚合：
select country, sum(case when position = 1 then 1 else 0 end) as pos_1, sum(case when position = 2 then 1 else 0 end) as pos_2, sum(case when position = 3 then 1 else 0 end) as pos_3from tgroup by countryorder by sum(pos) asc;
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