我想计算两个日期之间的天数差异： select datediff('2024-03-31', '2019-04-01');
select datediff('2024-03-31', '2019-04-01');
返回值1826错误。正确的日期是 2191。 我检查了文档，但不明白为什么会发生这种情况。
1826
2191
对于提供的日期表达式似乎有效
mysql> select datediff('2024-03-31','2019-04-01'); +-------------------------------------+ | datediff('2024-03-31','2019-04-01') | +-------------------------------------+ | 1826 | +-------------------------------------+
对于 2191，增加/减少一年
mysql> select datediff('2025-03-31','2019-04-01'); +-------------------------------------+ | datediff('2025-03-31','2019-04-01') | +-------------------------------------+ | 2191 | +-------------------------------------+
对于提供的日期表达式似乎有效
mysql> select datediff('2024-03-31','2019-04-01'); +-------------------------------------+ | datediff('2024-03-31','2019-04-01') | +-------------------------------------+ | 1826 | +-------------------------------------+对于 2191，增加/减少一年
mysql> select datediff('2025-03-31','2019-04-01'); +-------------------------------------+ | datediff('2025-03-31','2019-04-01') | +-------------------------------------+ | 2191 | +-------------------------------------+