在MySQL SELECT查询中生成日期范围
本文介绍如何生成指定日期范围内的日期列表。例如,给出起始日期 '2012-02-10' 和结束日期 '2012-02-15',应该得到以下结果:
<code>日期 ---------- 2012-02-10 2012-02-11 2012-02-12 2012-02-13 2012-02-14 2012-02-15 </code>
解决方案
可以使用以下查询来实现此目标:
SELECT * FROM (SELECT ADDDATE('1970-01-01',t4.i*10000 + t3.i*1000 + t2.i*100 + t1.i*10 + t0.i) selected_date FROM (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) t0, (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) t1, (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) t2, (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) t3, (SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) t4) v WHERE selected_date BETWEEN '2012-02-10' AND '2012-02-15'
此查询通过组合五个子查询 (t0-t4) 的值来创建一个虚拟表。每个子查询生成一系列一位整数 (0-9)。然后使用 ADDDATE()
函数将这些整数连接起来形成日期。WHERE
子句过滤日期以检索指定范围内的日期。
注意: 此解决方案适用于未来近 300 年内的日期范围。
以上是如何在 MySQL SELECT 查询中生成日期范围?的详细内容。更多信息请关注PHP中文网其他相关文章!

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