需要从sql server查询中获取前5条记录，但要满足where子句条件的所有记录的计数

Question

select count(1) 
from chatmessage 
where 
ChatThreadId 
in 
(
'A84B95F5-10E7-483C-A4C7-73EF4CBF48EC',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'7EA0C528-F43C-4DAF-9DFC-068E15177033',
'D2B15F10-7F6B-421C-8DA0-F8299BD5FFC5',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'7EA0C528-F43C-4DAF-9DFC-068E15177033',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'A852D60D-480A-45E9-B1AF-D51736BC7CBB',
'A84B95F5-10E7-483C-A4C7-73EF4CBF48EC',
'A852D60D-480A-45E9-B1AF-D51736BC7CBB',
'D2B15F10-7F6B-421C-8DA0-F8299BD5FFC5' )
and MessageType=1 
and TenantId='1B948F4A-67D7-4A50-A458-0CA16DAB4FAD' 
and Createddate between '2014-06-24 06:43:40.5374427' and '2016-06-24 06:43:40.5374427' 
and ModifiedDate between '2014-06-24 13:29:03.6922719' and '2016-06-24 13:29:03.6922719'

select top 5     ChatMessageId,ChatThreadId,MessageType,Message,TenantId,CreatedBy,Createddate,ModifiedDate 
from chatmessage 
where 
ChatThreadId 
in 
(
'A84B95F5-10E7-483C-A4C7-73EF4CBF48EC',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'7EA0C528-F43C-4DAF-9DFC-068E15177033',
'D2B15F10-7F6B-421C-8DA0-F8299BD5FFC5',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'7EA0C528-F43C-4DAF-9DFC-068E15177033',
'85DAFD40-697C-486C-BB3B-86357CFF6A36',
'A852D60D-480A-45E9-B1AF-D51736BC7CBB',
'A84B95F5-10E7-483C-A4C7-73EF4CBF48EC',
'A852D60D-480A-45E9-B1AF-D51736BC7CBB',
'D2B15F10-7F6B-421C-8DA0-F8299BD5FFC5' )
and MessageType=1 
and TenantId='1B948F4A-67D7-4A50-A458-0CA16DAB4FAD' 
and Createddate between '2014-06-24 06:43:40.5374427' and '2016-06-24 06:43:40.5374427' 
and ModifiedDate between '2014-06-24 13:29:03.6922719' and '2016-06-24 13:29:03.6922719'
order by  CreatedDate desc

Answer 1

如果您使用窗口函数进行计数，那么它将起作用：

SELECT top 5
   ...,
   COUNT(*) OVER() as rowCount
FROM
   ...
WHERE
   ...
ORDER BY
   ...

如果您未在窗口函数的OVER子句中提供任何内容，则它指的是整个数据集