Shulou(Shulou.com)06/01 Report--

@ Indexes index annotations can be marked on a class so that multiple columns can be indexed

@ Entity

@ Indexes (@ Index ("user,-date"))

Public class ChangeLog {

Date date

String user

Record changedRecord

}

Note: the minus sign before "date" indicates the descending order of dates, which makes it easy to find the nearest user.

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