Why is my MySQL date range query returning unexpected results?

MySQL date range query troubleshooting

Are you encountering unexpected results when querying a date range using MySQL? Let's analyze the problem together and find a solution.

Understanding date ranges

MySQL's BETWEEN operator requires the start date to be before the end date. But in your initial query, the second date ('2010-01-30 14:15:55') appears before the first date ('2010-09-29 10:15:55'). This results in an invalid date range, excluding all data.

Correction query

To fix this, just reverse the date order in the query:

<code class="language-sql">SELECT *
FROM `objects`
WHERE (date_field BETWEEN '2010-01-30 14:15:55' AND '2010-09-29 10:15:55')</code>

With this modified query, MySQL will correctly interpret the date range and retrieve matching data.

More resources

For more information, please refer to the MySQL official documentation on date and time processing: https://www.php.cn/link/4c74dcfeac90df69aed5c8a90125e696

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