declare @sql varchar(8000) set @sql = 'select name' select @sql = @sql + ',sum(case km when '''+km+''' then ISNULL(cj,0) else 0 end) ['+km+']' from (select distinct km from test) as a select @sql = @sql+' from test group by name' exec(@sql)
干嘛要那样做呢,这样就行了!declare @sql varchar(8000) set @sql = 'select name' select @sql = @sql + ',sum(case km when '''+km+''' then cj else 0 end) ['+km+']' from (select distinct km from test) as a select @sql = @sql+' from test group by name' exec(@sql)
then ISNULL(cj,0) else 0 end 其中不理解为什么ISNULL(cj,0)没有执行?刚才测试了一下,以下写法也可以的 declare @sql varchar(8000) set @sql = 'select name' select @sql = @sql + ',ISNULL(sum(case km when '''+km+''' then cj end),0) ['+km+']' from (select distinct km from test) as a select @sql = @sql+' from test group by name' print @sql exec(@sql)
set @sql = 'select name'
select @sql = @sql + ',sum(case km when '''+km+''' then cj else 0 end) ['+km+']'
from (select distinct km from test) as a
select @sql = @sql+' from test group by name'
exec(@sql)
其中不理解为什么ISNULL(cj,0)没有执行?刚才测试了一下,以下写法也可以的
declare @sql varchar(8000)
set @sql = 'select name'
select @sql = @sql + ',ISNULL(sum(case km when '''+km+''' then cj end),0) ['+km+']'
from (select distinct km from test) as a
select @sql = @sql+' from test group by name'
print @sql
exec(@sql)
Thank You