SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='45' ) [ RunTime:0.000639s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='46' ) [ RunTime:0.000673s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='47' ) [ RunTime:0.001108s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='67' ) [ RunTime:0.000810s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='68' ) [ RunTime:0.000602s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='69' ) [ RunTime:0.000647s ]
SELECT * FROM `think_spec` WHERE ( 1=1 AND good_id='70' ) [ RunTime:0.000724s ]
...原来TP把关联查询（relation）的子查询采用循环查询id的方式实现。我当时就疯了。然后心想，算了，加个缓存吧，于是加了个->cache(true)， 结果该缓存只对该查询语句的主查询有效，子查询完全不受影响，依然如上输出无数个根据id查询。请问官方，你们是有意这么设计的吗？ 最佳答案
