查找组内某字段不一致的组


例如：按采购订单号PURCHID分组后，统计每个组内InventDimId不一致的PurchId。

原始数据 PurchLine:

PurchId        InventDimId

po-001         0001

po-001         0001

po-002         0001

po-002         0001

po-002         0002

po-003         0001

结果：

po-002          2

SELECT

T.PURCHID

,COUNT(*)

from

(

select

PURCHLINE.PURCHID

,INVENTDIMID

from PURCHLINE

join PURCHTABLE

on PURCHLINE.PURCHID = PURCHTABLE.PURCHID

join INVENTTABLE

on PURCHLINE.ITEMID = INVENTTABLE.ITEMID

and INVENTTABLE.ITEMGROUPID = '原材料'

and INVENTTABLE.DATAAREAID = 'Lenovo'

where PURCHLINE.DATAAREAID = 'Lenovo'

and PURCHLINE.PURCHSTATUS = 1

group by

PURCHLINE.PURCHID

,INVENTDIMID

) T

group by T.PURCHID

Having COUNT(*) > 1