我在使用以下SQL时,排序一直正常。select
ROW_NUMBER() Over(order by ins_task.last_contact_time asc) as rowNum,
ins_task.guid taskGuid,
ins_campaign.task_source as taskSource,
ins_task.source_guid as sourceGuid,
ins_task.assigned_to_user taskAssignedToUser,
ins_task.assigned_by_user taskAssignedByUser,
CONVERT(varchar(19), ins_task.create_date, 120) taskCreateDate,
CONVERT(varchar(19), ins_task.last_contact_time, 120) lastContactTime,
ins_task.last_contact_phone lastContactPhone,
ins_task.last_dict_talker lastDictTalker,
ins_task.last_dict_contact_fail_reason lastDictContactFailReason,
(select name from sys_user where id = ins_task.last_contact_user ) lastContactUser
from ins_task
left join ins_campaign on (ins_task.campaign_guid = ins_campaign.guid)
where ins_campaign.project_id = #projectId#但在该SQL中多加了几列,发现不按over()里面的last_contact_time排序了。select
ROW_NUMBER() Over(order by ins_task.last_contact_time asc) as rowNum,
ins_task.guid taskGuid,
ins_campaign.task_source as taskSource,
ins_task.source_guid as sourceGuid,
ins_task.assigned_to_user taskAssignedToUser,
ins_task.assigned_by_user taskAssignedByUser,
CONVERT(varchar(19), ins_task.create_date, 120) taskCreateDate,
CONVERT(varchar(19), ins_task.last_contact_time, 120) lastContactTime,
ins_task.last_contact_phone lastContactPhone,
ins_task.last_dict_talker lastDictTalker,
ins_task.last_dict_contact_fail_reason lastDictContactFailReason,
(select name from sys_user where id = ins_task.last_contact_user ) lastContactUser,
(case when errorback_user is not null then (select name from sys_user su where su.id=errorback_user)
else (select name from sys_user su where su.id=checkclose_user) end) checkUserCN,
(case when errorback_user is not null then convert(varchar(19),errorback_time,120)
else convert(varchar(19),checkclose_time,120) end) checkTime,
(select name from sys_user su where su.id=errorclose_user) errorCloseCN,
convert(varchar(19),errorclose_time,120) errorCloseTime
from ins_task
left join ins_campaign on (ins_task.campaign_guid = ins_campaign.guid)
where ins_campaign.project_id = #projectId#请教高手。
ROW_NUMBER() Over(order by ins_task.last_contact_time asc) as rowNum,
ins_task.guid taskGuid,
ins_campaign.task_source as taskSource,
ins_task.source_guid as sourceGuid,
ins_task.assigned_to_user taskAssignedToUser,
ins_task.assigned_by_user taskAssignedByUser,
CONVERT(varchar(19), ins_task.create_date, 120) taskCreateDate,
CONVERT(varchar(19), ins_task.last_contact_time, 120) lastContactTime,
ins_task.last_contact_phone lastContactPhone,
ins_task.last_dict_talker lastDictTalker,
ins_task.last_dict_contact_fail_reason lastDictContactFailReason,
(select name from sys_user where id = ins_task.last_contact_user ) lastContactUser
from ins_task
left join ins_campaign on (ins_task.campaign_guid = ins_campaign.guid)
where ins_campaign.project_id = #projectId#但在该SQL中多加了几列,发现不按over()里面的last_contact_time排序了。select
ROW_NUMBER() Over(order by ins_task.last_contact_time asc) as rowNum,
ins_task.guid taskGuid,
ins_campaign.task_source as taskSource,
ins_task.source_guid as sourceGuid,
ins_task.assigned_to_user taskAssignedToUser,
ins_task.assigned_by_user taskAssignedByUser,
CONVERT(varchar(19), ins_task.create_date, 120) taskCreateDate,
CONVERT(varchar(19), ins_task.last_contact_time, 120) lastContactTime,
ins_task.last_contact_phone lastContactPhone,
ins_task.last_dict_talker lastDictTalker,
ins_task.last_dict_contact_fail_reason lastDictContactFailReason,
(select name from sys_user where id = ins_task.last_contact_user ) lastContactUser,
(case when errorback_user is not null then (select name from sys_user su where su.id=errorback_user)
else (select name from sys_user su where su.id=checkclose_user) end) checkUserCN,
(case when errorback_user is not null then convert(varchar(19),errorback_time,120)
else convert(varchar(19),checkclose_time,120) end) checkTime,
(select name from sys_user su where su.id=errorclose_user) errorCloseCN,
convert(varchar(19),errorclose_time,120) errorCloseTime
from ins_task
left join ins_campaign on (ins_task.campaign_guid = ins_campaign.guid)
where ins_campaign.project_id = #projectId#请教高手。
2009-11-24 18:56:49
2009-11-24 18:56:49
2009-11-24 18:56:55
2009-11-24 18:56:58
2009-11-24 18:57:02
2009-11-17 14:55:29
2009-11-17 14:55:38
2009-11-17 14:55:40
2009-11-17 14:55:41
2009-11-17 14:55:41
这是查询出来的,居然没有排序
估计楼主的语句有问题。 建议你能提供测试数据。建议你列出你的表结构,并提供测试数据以及基于这些测试数据的所对应正确结果。
参考一下这个贴子的提问方式http://topic.csdn.net/u/20091130/20/8343ee6a-417c-4c2d-9415-fa46604a00cf.html
1. 你的 create table xxx .. 语句
2. 你的 insert into xxx ... 语句
3. 结果是什么样,(并给以简单的算法描述)
4. 你用的数据库名称和版本(经常有人在MS SQL server版问 MySQL)
这样想帮你的人可以直接搭建和你相同的环境,并在给出方案前进行测试,避免文字描述理解上的误差。
when errorback_user is not null then
(select name from sys_user su where su.id = errorback_user)
else
(select name from sys_user su where su.id = checkclose_user)
end) checkUserCN,好像是这句的问题。去掉就正确了。哪道case when里面的查询会影响排序。
(case
when errorback_user is not null then
errorback_user
else
checkclose_user
end) checkUserCN, 也是可以正确排序的
看来
ROW_NUMBER() Over(order by ins_task.last_contact_time asc) as rowNum
仅仅只是一个评价函数,没有对结果集进行排序。