25 Jul 2025

To connect to a SQLServer database, the most common way to C# is to use the SqlConnection class in ADO.NET. 1. You need to install the Microsoft.Data.SqlClient package and reference the namespace; 2. Write a connection string containing the server address, database name, and authentication information; 3. Use using and try-catch to establish a connection and execute queries, while ensuring resource release and exception handling; 4. Common problems include remote connection settings, firewall configuration, port release and login permissions, etc., and need to be checked one by one.

23 Dec 2024

Can't Connect to MySQL Server through Socket: TroubleshootingWhen connecting to a MySQL database using PHP's mysqli class, you may encounter the...

08 Dec 2024

Error: Unable to Connect to MySQL Server via SocketProblemWhen attempting to connect to a MySQL database using the PHP MySQLi class, the following...

24 Jul 2025

When connecting to SQL databases in Go, you need to pay attention to driver registration, DSN format and basic operation procedures. 1. Install the driver package of the corresponding database, such as MySQL uses github.com/go-sql-driver/mysql, PostgreSQL uses github.com/lib/pq; 2. Use the database/sql interface and import the driver, configure the connection through the sql.Open function, but the actual connection is only established when Ping() is called; 3. The DSN format must be correct, the MySQL example is user:password@tcp(127.0.0.1:3306)/dbname, and the PostgreSQL example is us

19 Aug 2025

This article aims to resolve the common "Unable to connect to MySQL server" error in PHP applications, especially when using the XAMPP environment, mysqli_connect(): (HY000/2002) connection failure problem. We will explore the core reasons for such errors, such as improper host address configuration, MySQL service status abnormality, file placement location errors, etc., and provide detailed solutions, sample code and professional error handling methods to help developers quickly locate and repair database connection failures and ensure stable operation of applications.

02 Dec 2024

mysqli::mysqli() Error: Connecting via Socket 'MySQL' FailsWhen attempting to establish a connection to a MySQL database using PHP's mysqli class,...