这是我的疑问：
select *
from dbo.tblHRIS_Experience
where intsid=1115
order by expyear desc
intEID intSID nvrCompany nvrDesignation ExpMonth ExpYear ExpMonthTo ExpYearTo nvrReason dttCreatedon nvrCreatedBy dttModifiedOn nvrModifiedby
----------- ----------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----------------------- -------------------------------------------------- ----------------------- --------------------------------------------------
11 1115 Sundaram Clayton Limited Senior Executive Public reletion November 2009 August 2012 Better job 2012-08-23 12:02:10.527 1115 NULL NULL
10 1115 Harita Finance Limited Asst Manager Bonds September 1988 August 2009 Better job 2012-08-23 11:59:43.057 1115 NULL NULL
9 1115 Remedies India Medical Representative July 1982 August 1988 Better job 2012-08-23 11:57:23.277 1115 NULL NULL
在同一个查询中需要这样的输出：
[current company] [old Company] [Exp In perivious Organisation] [Total yrs Exp]
Sundaram Clayton Limited Harita Finance Limited 3 30
答案 0 :(得分：1)
这是代码。但请记住，您需要将ExpYear和ExpMonth以及ExpYearTo和ExpMonthTo合并为2个单独的日期字段，因为现在它不会占用几个月。
;with a as (select * from dbo.tblHRIS_Experience where intsid=1115 order by expyear desc)
select (select top 1 nvrCompany from a) as 'current company',
(select top 1 nvrCompany from a where ExpYear<(select top 1 ExpYear from a)) as 'old Company',
(select count(*) from a) as 'Exp In perivious Organisation',
(select max(ExpYearTo)-min(ExpYear) from a) as 'Total yrs Exp'
答案 1 :(得分：0)
试试此代码
create table #test (
intsid int,
nvrCompany varchar(255),
ExpMonth varchar(15),
ExpYear smallint,
ExpMonthTo varchar(15),
ExpYearTo smallint
)
insert into #test values (1115, 'Sundaram Clayton Limited', 'November',2009,'August',2012)
insert into #test values (1115, 'Harita Finance Limited', 'September',1988,'August',2009)
insert into #test values (1115, 'Remedies India', 'July',1982,'August',1988)
insert into #test values (222, 'test','July',1982,'August',1988)
;with a as (
select nvrCompany,
CONVERT(datetime, ExpMonth+' 01 '+cast(ExpYear as char(4))) as datefrom,
CONVERT(datetime, ExpMonthTo+' 01 '+cast(ExpYearTo as char(4))) as dateto
from #test where intsid=1115
)
select (select nvrCompany from a where datefrom=(select max(datefrom) from a)) as 'current company',
(select top 1 nvrCompany from a where datefrom<(select max(datefrom) from a) order by datefrom desc) as 'old Company',
(select count(*) from a) as 'Exp In perivious Organisation',
(select datediff(year, min(datefrom),max(dateto)) from a) as 'Total yrs Exp'
答案 2 :(得分：0)
请检查查询：
with T as(
select cast(('01-'+ExpMonth+'-'+ExpYear) as datetime) ExpFrom,
cast(('01-'+ExpMonthTo+'-'+ExpYearTo) as datetime) ExpTo,
row_number() over (partition by intSID order by cast(('01-'+ExpMonthTo+'-'+ExpYearTo) as datetime) desc) Ord,
* from dbo.tblHRIS_Experience
)
select [1] as [CurrComp], [2] as [OldComp], Expr2, TotalExpr From(
select
nvrCompany,
(select datediff(year, ExpFrom, ExpTo) from T as T2 where T2.intSID=T1.intSID and Ord=2) Expr2,
datediff(year, Min(ExpFrom) over(partition by intSID), Max(ExpTo) over(partition by intSID)) TotalExpr, Ord
from T as T1
)x pivot (min(nvrCompany) for Ord IN ([1], [2])) as vh