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

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 ...

The Trump administration is collecting data on all Americans, and they are enlisting the data analysis company Palantir to do it. The New York Times reports that President Trump has enlisted the firm, ...

A database is an essential component of any modern application, providing a repository for storing and retrieving large amounts of information. Building a database can seem daunting, but it can be ...

MySQL and PostgreSQL are two of the most used open source SQL databases, and both fulfill the role of a general-purpose database well. How do you choose which one to use for a project? Let's look at ...

Struggling with disorganized data in Excel can be incredibly frustrating. You have all the information you need, but without connections between tables, it’s like trying to solve a puzzle with missing ...

--source: mysqldump filename to process. It could be a compressed or regular file. --desc: This option will list out all databases and tables. --extract: Specify what to extract. Possible values DB, ...

Google is touting significant speed improvements when performing calculations in Sheets on desktop Chrome and Edge. Google Sheets calculations now “run significantly faster.” This applies to the ...