sqlserver行列转换示例

　　--插入测试数据

　　select '基层员工' as '范围',21826 as '在职人数',497 as '离职人数',202112 as '时间' into #T

　　union all

　　select '主管级及以上员工' as '范围',3904 as '在职人数',40 as '离职人数',202112 as '时间'

　　union all

　　select '基层员工' as '范围',21835 as '在职人数',488 as '离职人数',202101 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3883 as '在职人数',19 as '离职人数',202101 as '时间'

　　union all

　　select '基层员工' as '范围',21819 as '在职人数',472 as '离职人数',202102 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3900 as '在职人数',36 as '离职人数',202102 as '时间'

　　union all

　　select '基层员工' as '范围',22095 as '在职人数',748 as '离职人数',202103 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3914 as '在职人数',50 as '离职人数',202103 as '时间'

　　union all

　　select '基层员工' as '范围',22006 as '在职人数',659 as '离职人数',202104 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3927 as '在职人数',63 as '离职人数',202104 as '时间'

　　union all

　　select '基层员工' as '范围',22080 as '在职人数',733 as '离职人数',202105 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3935 as '在职人数',71 as '离职人数',202105 as '时间'

　　union all

　　select '基层员工' as '范围',22021 as '在职人数',669 as '离职人数',202106 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3935 as '在职人数',71 as '离职人数',202106 as '时间'

　　union all

　　select '基层员工' as '范围',22039 as '在职人数',692 as '离职人数',202107 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3911 as '在职人数',47 as '离职人数',202107 as '时间'

　　union all

　　select '基层员工' as '范围',22061 as '在职人数',714 as '离职人数',202108 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3934 as '在职人数',70 as '离职人数',202108 as '时间'

　　union all

　　select '基层员工' as '范围',21904 as '在职人数',557 as '离职人数',202109 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3913 as '在职人数',49 as '离职人数',202109 as '时间'

　　union all

　　select '基层员工' as '范围',21905 as '在职人数',558 as '离职人数',202110 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3902 as '在职人数',38 as '离职人数',202110 as '时间'

　　union all

　　select '基层员工' as '范围',21915 as '在职人数',568 as '离职人数',202111 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3907 as '在职人数',43 as '离职人数',202111 as '时间'

　　union all

　　select '基层员工' as '范围',21929 as '在职人数',482 as '离职人数',202112 as '时间'

　　union all

　　select '主管级及以上员工' as '范围',3905 as '在职人数',41 as '离职人数',202112 as '时间'

　　select * from #T

　　declare @sql varchar(max)=''

　　select @sql=@sql+

　　',max(case when a.时间='+cast(t.时间 as varchar(20))+' then a.在职人数 else NULL end) 在职人数 '+

　　',max(case when a.时间='+cast(t.时间 as varchar(20))+' then a.离职人数 else NULL end) 离职人数 '+

　　',max(case when a.时间='+cast(t.时间 as varchar(20))+' then a.时间 else NULL end) 时间 '

　　from #T t group by t.时间

　　set @sql='select a.范围'+ @sql +'from #T a group by a.范围'

　　--set @sql='select * from #T'

　　print(@sql)

　　exec(@sql)

标签：示例,union,sqlserver,员工,行列,在职,人数,select,离职
来源： https://www.cnblogs.com/linjingyg/p/15727396.html