PDO获取多个插入ID [英] PDO Get Multiple Insert Ids

问题描述

使用PDO运行以下查询(实际上，我使用准备好的语句，但存在相同的问题)

Running the following query using PDO (Actually, I use prepared statements but same problem)

INSERT INTO MyTable(MyField) VALUES('Row1'), ('Row2')

如何获取与Row1和Row2有关的记录的ID?

How can I get the Ids for the records relating to Row1 and Row2?

$db->lastInsertId()从字面上返回最后一个ID.

$db->lastInsertId() literally returns the last single Id.

采用这个最后的ID，减去记录数并假定范围覆盖了我的所有记录是否足够?会有差距/跳跃.是否保证此查询是原子查询?

Is it sufficient to take this last Id, subtract the # of records and assume that range covers all my records? can there be gaps/jumps. Is this query guaranteed to be atomic?

推荐答案

如果您使用的是MyISAM表，则由于表级锁定机制，只能给您指定范围的ID.

If you're using MyISAM tables then because of the table level locking mechanism it's only possible for you to get given a range of ids.

阅读

After reading http://dev.mysql.com/doc/refman/5.5/en/innodb-auto-increment-handling.html#innodb-auto-increment-traditional assuming you're using "traditional" innodb locking (which likely you are) then again for a single statement the set of IDs will be sequential.

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