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Re: 为什么强制索引还不走索引?
最初由 biti_tzw 发布
[B]SELECT /*+ index(osor_dr_long_dist XNC_OSOR_DLD_ENTRY_DT)*/
nvl(min(a.start_date),to_date('10000101','YYYYMMDD')) as min_date,
nvl(max(a.start_date),to_date('99990101','YYYYMMDD')) as max_date
FROM Osor_Dr_Long_Dist a
WHERE trunc(a.entry_dt) = to_date('20010101','yyyy-mm-dd')
分析计划后,提示我Table Access Full [/B]
用trunc(a.entry_dt)作为字段建一个函数索引再试一下 |
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