别名内容的读取

Question

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

现在有这条sql语句，其中有一个别名为result
$sql = "select sum(num) as result from table";
问题是怎么把result的内容读出来？？

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1 Answer

深蓝 · Answer 1 · 2021-02-05T04:25:14+0000

answered Feb 5, 2021 by 深蓝 (71.8m points)

sql 执行完成之后打印一下返回值看看具体返回的什么

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