EXPLAIN mycat

Mycat提供的EXPLAIN语句并不是用来查看执行计划的，而是用来查看路由结果的。当使用EXPLAIN mycat语句时，Mycat会将该语句路由到相应的数据源节点，并返回路由结果，而不是真正的执行计划。如果想要查询真正的执行计划，可以通过获取路由结果中的sql语句，并在具体的数据源节点上查看执行计划。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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