102.交叉表-优先级处理

我就是我 2024-02-19 18:59 54阅读 0赞

--示例数据
    create table a(
    qid int,j int,rid nvarchar(10),tagname nvarchar(10),
    starttime smalldatetime,endtime smalldatetime,
    startweekday int,endweekday int,
    startdate smalldatetime,enddate smalldatetime,d int)
    insert a  select 1,1 ,'A1','未订','08:00','09:00',1   ,5   ,null       ,null       ,1
    union all select 1,2 ,'A1','未订','09:00','10:00',1   ,5   ,null       ,null       ,1
    union all select 1,3 ,'A1','未订','10:00','11:00',1   ,5   ,null       ,null       ,1
    union all select 1,4 ,'A1','装修','08:00','09:00',null,null,'2005-1-18','2005-1-19',2 
    union all select 1,5 ,'A1','装修','09:00','10:00',null,null,'2005-1-18','2005-1-19',2
    union all select 1,6 ,'A1','装修','10:00','11:00',null,null,'2005-1-18','2005-1-19',2
    union all select 1,7 ,'A2','未订','08:00','09:00',1   ,5   ,null       ,null       ,1
    union all select 1,8 ,'A2','未订','09:00','10:00',1   ,5   ,null       ,null       ,1
    union all select 1,9 ,'A2','未订','10:00','11:00',1   ,5   ,null       ,null       ,1
    union all select 1,10,'A2','装修','08:00','09:00',null,null,'2005-1-18','2005-1-19',2
    union all select 1,11,'A2','装修','09:00','10:00',null,null,'2005-1-18','2005-1-19',2
    union all select 1,12,'A2','装修','10:00','11:00',null,null,'2005-1-18','2005-1-19',2
    
    create table c(id int,qid int,rid varchar(10),consumedate smalldatetime,j int)
    insert c  select 1,1,'A1','2005-1-18',1
    union all select 1,1,'A2','2005-1-17',8
    go
    
    create proc p_qry
    @date smalldatetime --要查询的日期
    as
    set nocount on
    declare @week int,@s nvarchar(4000)
    --格式化日期和得到星期
    select @date=convert(char(10),@date,120)
    	,@week=(@@datefirst+datepart(weekday,@date)-1)%7
    	,@s=''
    select id=identity(int),* into #t
    from(
    	select top 100 percent
    		a.qid,a.rid,a.j,
    		tagname=case when c.id is null then a.tagname else N'被订' end,
    		starttime=convert(char(5),a.starttime,108),
    		endtime=convert(char(5),a.endtime,108)
    	from a
    		left join c on a.qid=c.qid and a.rid=c.rid and a.j=c.j
    			and c.consumedate=@date
    	where (@week between a.startweekday and a.endweekday)
    		or(@date between a.startdate and a.enddate)
    	order by a.qid,a.rid,a.starttime,a.d desc)a
    
    select @s=@s+N',['+rtrim(rid)
    	+N']=max(case when qid='+rtrim(qid)
    	+N' and rid=N'''+rtrim(rid)
    	+N''' then tagname else N'''' end)'
    from #t group by qid,rid
    exec('
    select starttime,endtime'+@s+' 
    from #t a
    where not exists(
    	select * from #t
    	where qid=a.qid and rid=a.rid 
    		and starttime=a.starttime
    		and endtime=a.endtime
    		and id)

)