帮助删除具有困难t-sql查询的值
上述语句返回以下内容:帮助删除具有困难t-sql查询的值,sql,sql-server,tsql,Sql,Sql Server,Tsql,上述语句返回以下内容: select * from qvalues where rowid in ( select rowid from qvalues where rowid in (select rowid from batchinfo where datapath not like '%thc%' and datapath not like '%pain%' and datapath not like 'tf1' and datapath like '%excel short%')
select * from qvalues where rowid in (
select rowid from qvalues where rowid in (select rowid from batchinfo where datapath not like '%thc%' and datapath not like '%pain%' and datapath not like 'tf1' and datapath like '%excel short%')
and (compound='etg')
and name='qc1'
group by rowid
having (COUNT(rowid)>1))
and name='qc1'
order by rowid,rid
我只想保留具有第一个唯一ROWID的行,并删除其余的行。如何在第一次出现唯一的ROWID之后删除每条记录???这可能会有所帮助
rid name compound rt response finalConc qvalue rowid
508898 QC1 ETG 33,463.34 3,388.83 719.38 100 17800
508900 QC1 ETG 33,463.34 3,388.83 617.09 100 17800
510382 QC1 ETG 41,657.33 4,662.37 742.01 100 17860
510384 QC1 ETG 33,463.34 3,388.83 617.09 100 17860
527192 QC1 ETG 106,578.46 15,116.28 894.79 100 18478
527194 QC1 ETG 33,463.34 3,388.83 617.09 100 18478
527198 QC1 ETG 110,313.48 16,699.65 877.02 100 18479
527200 QC1 ETG 33,463.34 3,388.83 617.09 100 18479
527204 QC1 ETG 107,128.41 15,052.29 852.51 100 18480
527206 QC1 ETG 33,463.34 3,388.83 617.09 100 18480
527210 QC1 ETG 116,257.86 16,929.16 841.9 100 18481
527212 QC1 ETG 33,463.34 3,388.83 617.09 100 18481
527216 QC1 ETG 102,569.68 17,601.24 991.17 100 18482
527218 QC1 ETG 33,463.34 3,388.83 617.09 100 18482
527222 QC1 ETG 120,925.71 15,204.38 715.48 100 18483
527224 QC1 ETG 33,463.34 3,388.83 617.09 100 18483
529873 QC1 ETG 213,327.65 26,499.14 691.04 100 18576
529875 QC1 ETG 33,463.34 3,388.83 617.09 100 18576
540030 QC1 ETG 69,627.37 9,401.47 814.5 100 18987
540032 QC1 ETG 33,463.34 3,388.83 617.09 100 18987
540182 QC1 ETG 56,768.32 7,682.65 921.53 100 18993
540184 QC1 ETG 33,463.34 3,388.83 617.09 100 18993
540186 QC1 ETS 92,853.28 2,428.01 14.06 100 18994
查询使用公共表表达式(CTE)获取行,并为每个rowid组添加一个序列号。顺序由rid排序决定。因此,第一个rowid具有最小的rid
delete语句将删除组中所有非第一行的行。我假定您指的是第一行,如“具有最低的rid”,在这种情况下,应使用以下方法
WITH cte AS
(
SELECT rowid,
ROW_NUMBER() OVER (PARTITION BY rowid ORDER BY rid) AS sequence
FROM qvalues
WHERE rowid IN
(SELECT rowid
FROM batchinfo
WHERE datapath NOT LIKE '%thc%'
AND datapath NOT LIKE '%pain%'
AND datapath NOT LIKE 'tf1'
AND datapath LIKE '%excel short%'
)
AND (compound='etg')
AND name='qc1'
GROUP BY rowid
HAVING COUNT(rowid)>1
)
DELETE
FROM cte
WHERE sequence > 1
也就是说,我的直觉反应是,您的初始查询可以进行某种程度的优化,使一切变得更简单。但是,我不知道没有模式。。。所以也许不是
;with cte as (
--put your query here
)
select c1.*
from cte c1
join (
select rowID, min(rid) minRID
from cte
group by rowID
) c2 on c1.rowID=c2.rowID
and c1.rid = c2.minRID
这应该可以完成任务:)
您使用一个通用的表表达式,一旦完成,就可以得到带有MIN(rid)的行。Huh,我从未想过通过CTE从表中删除值。。。我必须记住这一点。虽然我读了“删除所有其他内容”来暗示“从结果中”。
WITH cte AS
(
select rowid from qvalues where rowid in (select rowid from batchinfo where datapath not like '%thc%' and datapath not like '%pain%' and datapath not like 'tf1' and datapath like '%excel short%')
and (compound='etg')
and name='qc1'
group by rowid
having (COUNT(rowid)>1)
)
SELECT qvalues.* FROM qvalues INNER JOIN cte ON cte.rowid = qvalues.rowid
WHERE qvalues.rid = (SELECT MIN(rid) from cte where cte.rowid = qvalues.rowid)
ORDER BY rowid