擅长:python、mysql、java
<p>听起来列名<strong><code>count</code></strong>被误解为<a href="http://www.postgresql.org/docs/current/interactive/functions-aggregate.html" rel="noreferrer">aggregate function</a>。在</p>
<p>最佳解决方案:永远不要使用<a href="http://www.postgresql.org/docs/current/interactive/sql-keywords-appendix.html" rel="noreferrer"><strong>reserved words</strong></a>作为标识符。在</p>