<span style="font-family:Courier New;font-size:18px;">select a.facilityid,
a.faulttime,
a.domainid,
a.facilitytype1,
a.facilitytype2,
a.facilitytype3,
count(*)
from ips_fault_facility a
group by a.facilityid,
a.faulttime,
a.domainid,
a.facilitytype1,
a.facilitytype2,
a.facilitytype3 having count(*) > 1</span><span style="font-family:Courier New;font-size:18px;">create table ips_fault_facility1
as
select *
from ips_fault_facility a
where rowid <> (select min(rowid)
from ips_fault_facility b
where a.facilityid = b.facilityid
and a.faulttime = b.faulttime
and a.domainid = b.domainid
and a.facilitytype1 = b.facilitytype1
and a.status = b.status
and a.facilitytype2 = b.facilitytype2
and a.facilitytype3 = b.facilitytype3)</span>--刪除重複數據
<span style="font-family:Courier New;font-size:18px;">delete from ips_fault_facility a where exists(select 1 from ips_fault_facility1 b where a.uuid = b.uuid)</span>查詢及刪除重複記錄的SQL語句
1、查找表中多餘的重複記錄，重複記錄是根據單個字段（Id）來判斷
select * from 表 where Id in (select Id from 表 group byId having count(Id) > 1)
2、刪除表中多餘的重複記錄，重複記錄是根據單個字段（Id）來判斷，只留有rowid最小的記錄
DELETE from 表 WHERE (id) IN ( SELECT id FROM 表 GROUP BY id HAVING COUNT(id) > 1) AND ROWID NOT IN (SELECT MIN(ROWID) FROM 表 GROUP BY id HAVING COUNT(*) > 1);
3、查找表中多餘的重複記錄（多個字段）
select * from 表 a where (a.Id,a.seq) in(select Id,seq from 表 group by Id,seq having count(*) > 1)
4、刪除表中多餘的重複記錄（多個字段），只留有rowid最小的記錄
delete from 表 a where (a.Id,a.seq) in (select Id,seq from 表 group by Id,seq having count(*) > 1) and rowid not in (select min(rowid) from 表 group by Id,seq having count(*)>1)
5、查找表中多餘的重複記錄（多個字段），不包含rowid最小的記錄
select * from 表 a where (a.Id,a.seq) in (select Id,seq from 表 group by Id,seq having count(*) > 1) and rowid not in (select min(rowid) from 表 group by Id,seq having count(*)>1)