sqlserver行转列

if(object_id('qa') > 0)
?? drop table qa
go
create table qa(
?? qtcode varchar(100),
?? simpleTime varchar(20),
?? water decimal(18,2)
)
insert into qa
select 'a','09:10',11 union all
select 'a','10:01',22 union all
select 'a','10:20',33 union all
select 'a','10:30',44 union all
select 'a','10:40',55 union all
select 'b','08:10',12 union all
select 'b',13 union all
select 'b','10:02',14 union all
select 'b',15

select * from qa

declare @sql varchar(3000)
set @sql = 'select qtcode ';
select @sql = @sql + ',(case simpleTime when '''+simpleTime+''' then water else 0 end) ['+simpleTime+']'
?from (select distinct simpleTime from qa) as a
set @sql = @sql+' from qa '
exec(@sql)

declare @sql1 varchar(3000) set @sql1 = 'select qtcode '; select @sql1 = @sql1 + ',max(case simpleTime when '''+simpleTime+''' then water else 0 end) ['+simpleTime+']' ?from (select distinct simpleTime from qa ) as a set @sql1 = @sql1+' from qa group by qtcode ' exec(@sql1)

（编辑：李大同）

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