sql中查询时间问题
select isnull(sum(WG_RSNUM),0) as TotalRN,
isnull(round(sum(WG_AMOUNT),2),0) as TotalAmount
from View_SM_IN0
where WG_BILLTYPE='0'
AND WG_VERIFYDATE >= '2012-07-01' 查询用了不到1秒
select isnull(sum(WG_RSNUM),0) as TotalRN,
isnull(round(sum(WG_AMOUNT),2),0) as TotalAmount
from View_SM_IN0
where WG_BILLTYPE='0'
AND WG_VERIFYDATE >= '2012-08-01'
查询却用了9秒
[解决办法]
把两条语句反过来试一次,也许是缓存造成的.
[解决办法]
select isnull(sum(WG_RSNUM),0) as TotalRN,
isnull(round(sum(WG_AMOUNT),2),0) as TotalAmount
from View_SM_IN0 with(nolock)
where WG_BILLTYPE='0'
AND WG_VERIFYDATE >= '2012-08-01'


[解决办法]
数据没有变动吧，如果没有变动时间应该一样啊！
[解决办法]
这不科学啊 应该是缓存的问题
[解决办法]
是缓存的问题，貌似我以前也遇到过
[解决办法]
数据库缓存问题吧啊，你吧缓存清理了在执行下