sql多表联查实例

 百家乐-数据     |      2020-03-17 02:39

sql多表联合检查实例上面提供五款sql多表关联合检查询的实例,个个作用不相符。

sql多表联合检查实例上边提供三款sql多表关联合检查询的实例,个个效用不一致等。select * from order_info as a ,ivrlog4ivrdlvinst as b where (a.saleorder=b.ext1_skill and b.start_date=@date1 and se_id='55' and b.ext1_skill!='') and convert(varchar(10),a.instime,112)=@date2 and max(a.instime)

方法二

select * from order_info as a where a.saleorder=( select b.ext1_skill from ivrlog4ivrdlvinst as b where b.start_date=@date1 and se_id='55' and b.ext1_skill!='')and convert(varchar(10),max(a.instime),112)=@date2

方法三

declare @date1 varchar(20), @date2 varchar(20) set @date1='20100812' set @date2='2010-08-12'

select * from order_info as a where a.saleorder=(select b.ext1_skill from ivrlog4ivrdlvinst as b where b.start_date=@date1 and se_id='55' and b.ext1_skill!='') and convert(varchar(10),a.instime,112)=@date2 and max(a.instime)

方法四

select b.caller, b.start_date, b.start_time, b.ext1_skill, c.deliveryno, c.destroyresult, c.deliverydate, c.deliverytime, c.arrangetime, c.driverphone, c.drivermobile, a.servicedate, a.servicetime, a.workertelfrom order_info as a ,ivrlog4ivrdlvinst as b ,delivery_info as cwhere a.saleorder in (select b.ext1_skill from ivrlog4ivrdlvinst where b.start_date=@date1 and b.se_id='55' and b.ext1_skill!='') and convert(varchar(10),a.instime,112)=@date2 order by b.start_date desc, b.start_time desc

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