select E.station_id,convert(varchar(50),D.start_time,105) as dates,sum(D.value_a+D.value_b+D.value_c) as energy_value from dbo.emp_energy_daily as D
left join dbo.emp_device_base as E on D.device_id = E.device_id
where D.start_time between'${startDate}' and '${endDate}'
group by dates,E.station_id
可能在表D或E在有字段与dates冲突
也可能dates是SQL的一个属性或方法。
你最好改一下dates为别的字段名。
也可能dates是SQL的一个属性或方法。
你最好改一下dates为别的字段名。
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第1个回答 2011-03-03
select E.station_id,convert(varchar(50),D.start_time,105) as dates,sum(D.value_a+D.value_b+D.value_c) as energy_value from dbo.emp_energy_daily as D
left join dbo.emp_device_base as E on D.device_id = E.device_id
where D.start_time between'${startDate}' and '${endDate}'
group by convert(varchar(50),D.start_time,105),E.station_id本回答被提问者采纳
left join dbo.emp_device_base as E on D.device_id = E.device_id
where D.start_time between'${startDate}' and '${endDate}'
group by convert(varchar(50),D.start_time,105),E.station_id本回答被提问者采纳
第2个回答 2011-03-03
select E.station_id,convert(varchar(50),D.start_time,105) as dates,sum(D.value_a+D.value_b+D.value_c) as energy_value from dbo.emp_energy_daily as D
left join dbo.emp_device_base as E on D.device_id = E.device_id
where D.start_time between'${startDate}' and '${endDate}'
group by convert(varchar(50),D.start_time,105) ,E.station_id
要怎样写吧
left join dbo.emp_device_base as E on D.device_id = E.device_id
where D.start_time between'${startDate}' and '${endDate}'
group by convert(varchar(50),D.start_time,105) ,E.station_id
要怎样写吧
