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-- 将lmt作为唯一标识确保唯一
update SWS_ST_SPB_P set lmt = t.lmt
from
SWS_ST_SPB_P s,
(
SELECT stcd, mpcd, tm, v1, v2, v3, r1, r2, r3,
DATEADD(second, ABS(CHECKSUM(NEWID())) % DATEDIFF(second,'00:00','23:59'), CONVERT(char(20),tm,20) ) as lmt
from SWS_ST_SPB_P s
) t
where s.stcd = t.stcd and s.mpcd = t.mpcd and s.tm = t.tm
-- 重复数据只保留一条
DELETE from SWS_ST_SPB_P where
stcd in (SELECT stcd from SWS_ST_SPB_P GROUP BY stcd, mpcd, tm HAVING count(*)>1)
and tm in (SELECT tm from SWS_ST_SPB_P GROUP BY stcd, mpcd, tm HAVING count(*)>1)
and mpcd in (SELECT mpcd from SWS_ST_SPB_P GROUP BY stcd, mpcd, tm HAVING count(*)>1)
and lmt not in (SELECT max(lmt) from SWS_ST_SPB_P GROUP BY stcd, mpcd, tm HAVING count(*)>1)