Oracle中数据类型Timestamp转换成Date

Oracle中数据类型Timestamp转换成Date， 把 02-1月 -18 12.00.00.000000 上午 转换成：2010-01-01 00:00:00 select * from Authority t order by t.a_createddate desc for update; select  to_char(cast (cast (a_start_date as time

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