快照读,读提交,可重复读

快照读(Snapshot Read)

读提交(Read Committed)

可重复读(Repeated Read)

RR下,事务在第一个Read操作时,会建立Read View

RC下,事务在每次Read操作时,都会建立Read View

纵有白头俱老意,奈何缘浅路芊芊.
原文地址:https://www.cnblogs.com/hanby/p/14172162.html