select a.id,b.name,sum(case b.name when 'name1' then num end) name1,
sum(case b.name when 'name2' then num end) name2,
sum(case b.name when 'name3' then num end) name3
from table1 a inner join table2 b on a.name=b.name group by a.id,b.name
sum(case b.name when 'name2' then num end) name2,
sum(case b.name when 'name3' then num end) name3
from table1 a inner join table2 b on a.name=b.name group by a.id,b.name
解决方案 »
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