To intuitively understand join operations, we first build a simple example database that stores grocery items and their corresponding categories. The category information is stored in the categories ...

To query a user's mobile phone and WeChat number, the following SQL statement can be used.

The continuing economic uncertainty brought by the pandemic has supercharged many organizations to “do more with less,” tasking development teams (among others) with reducing resource and cost drains ...

SQL is a convenient way to manage and query your data, but badly written queries can tie up your database. Here are seven common SQL traps and how to avoid them. Database developers have it tough.

I'm trying to port an application from SQL Server to MySQL (5.6.4) and running into performance issues. MySQL happens to be running on OS X Server, but this seems more like a UNIX question. SELECT ...