摘要: 零、 select x from y where z x输出条件: \(\color{#f00}{avg()}\) | \(\color{#f00}{min()}\) | \(\color{#f00}{max()}\) | \(\color{#f00}{sum()}\) | \(\color{#f0 阅读全文
posted @ 2020-06-24 15:57 Yo! 阅读(224) 评论(0) 推荐(0) 编辑