行相同的 SELECT 语句。</p>
<pre>test=&gt; SELECT * FROM table_cache_ok WHERE a = 1;
 a
---
 1
(1 row)
</pre>

<p>这次日志消息显示 SELECT 语句的结果来源于缓存。</p>
<pre>LOG:   <b>query result fetched from cache.</b> statement: SELECT * FROM table_cache_ok WHERE a = 1;
</pre>

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<h1 id="more">查询缓存的更多内容</h1>

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