sequence number

基本解釋

Assigns a sequence number for this event, if one has not been set by the event source.
如果事件源沒有設(shè)置序號的話，那么為這個(gè)事件分配一個(gè)序號。
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)為計(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，您可以為記錄中的所有組合字段計(jì)算一個(gè)定制的惟一編號。

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