sequence number

基本解釋

Assigns a sequence number for this event, if one has not been set by the event source.
如果事件源沒(méi)有設(shè)置序號(hào)的話，那麼爲(wèi)這個(gè)事件分配一個(gè)序號(hào)。
Typically, the nonce can be implemented as a counter (a sequence number) or as a timestamp.
現(xiàn)時(shí)標(biāo)志通常能實(shí)現(xiàn)爲(wèi)計(jì)數(shù)器（一個(gè)序列數(shù)）或者時(shí)間戳。
Every SQL record has its own Unique Sequence Number, and you can also compute a custom unique number for all combined fields in the record.
每一條 SQL 記錄都有它自己的惟一序號(hào)，您可以爲(wèi)記錄中的所有組郃字段計(jì)算一個(gè)定制的惟一編號(hào)。

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