In PostgreSQL, the `date_part(part, source)` function lets you pull out specific parts of a date or timestamp, like the year, month, day, or even hour. But MySQL doesn’t have a `date_part()` function.

Hello all! I have a MySQL query that is giving me the results that I want, but I'm having difficulty displaying the results in PHP. Here is my SQL statement: SELECT `tkid`,COUNT(*) FROM ...

In the process of using MySQL databases, indexes are an important mechanism that cannot be ignored, significantly enhancing query performance. This article will delve into two fundamental types of ...