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mySQL 延迟 查询主表_MySQL
- WBOYOriginal
- 2016-06-01 13:19:441035browse
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例：
一般情况下就是把lazy设为true，而不是false，因为，假如设为false的话，在执行查询主表的同时，相应的子表也会查询，添加了许多无用功。bitsCN.com
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