How to log sql queries executed on mysql that are issued from pomelo in asp net

Introduction

ASP.NET is a popular programming language used for building web applications. One common requirement in web development is the ability to log SQL queries executed on a MySQL database. In this article, we will explore how to achieve this using Pomelo, a popular MySQL connector for ASP.NET.

Setting up Pomelo

Before we can start logging SQL queries, we need to set up Pomelo in our ASP.NET project. To do this, we first need to install the Pomelo.EntityFrameworkCore.MySql package using NuGet. Open the NuGet Package Manager Console and run the following :

Install-Package Pomelo.EntityFrameworkCore.MySql

Once the package is , we need to configure our database string in the appsettings.json file. Here is an of how the connection string should look like:

{
  "ConnectionStrings": {
    "DefaultConnection": "Server=localhost;Database=mydatabase;Uid=myuser;Pwd=mypassword;"
  }
}

Enabling SQL Logging

Now that we have Pomelo set up, we can enable SQL query logging. To do this, we need to modify our DbContext class. Open your DbContext class and add the following code:

public class MyDbContext : DbContext
{
    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseMySql(Configuration.GetConnectionString("DefaultConnection"))
                     .EnableSensitiveDataLogging()
                     .LogTo(Console.WriteLine, LogLevel.Information);
    }
}

In the code above, we are using the EnableSensitiveDataLogging() method to log sensitive data and the LogTo() method to where the logs should be written. In this example, we are the logs to the console, but you can customize this to write to a file or a database.

Viewing the SQL Query Logs

With SQL query logging enabled, we can now view the logs. When running the application, the SQL queries executed by Pomelo will be printed to the console. You can also customize the logging behavior to write the logs to a file or a database for easier analysis.

Conclusion

In this article, we have explored how to log SQL queries executed on a MySQL database using Pomelo in ASP.NET. By enabling SQL query logging and the log destination, we can easily monitor and analyze the queries executed by our application. This can be helpful for debugging, optimization, and auditing.

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