...:这意味着,如果你在T1时间读取某一行,在T2时间重新读取这一行时,这一行可能已经有所修改,也许它已经消失,也可能被更新了。 - 幻象读(phantom read):如果你在T1时间执行一个查询,在T2时间再次执行这个查询,此时数据库中可能已经增加了行。
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phantom read ( 幻影读): A transaction re-executes a query returning a set of rows that satisfy a search condition and finds that the set of ro...
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An unrepeatable read, phantom read, and reads of uncommitted data can occur.
会发生不可重读、幻像读和读未提交数据。
A phantom read occurs when a transaction re-executes a query and finds a set of results changed since the last query due to another transaction that committed new data.
当事务再次执行查询,并发现一组结果自最后一次查询后由于另一个事务提交了新的数据而发生了更改,则会发生幻像读。
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