Have you worked with writing SQL queries in your projects?

Yes, in C# projects, it is common to write SQL queries to interact with the database. This is usually done through ADO.NET, Entity Framework, or Dapper. Here's a simple example of a query using ADO.NET:

using (var connection = new SqlConnection(connectionString))
{
    connection.Open();
    var command = new SqlCommand("SELECT * FROM Users WHERE Id = @id", connection);
    command.Parameters.AddWithValue("@id", userId);
    using (var reader = command.ExecuteReader())
    {
        while (reader.Read())
        {
            Console.WriteLine(reader["Name"]);
        }
    }
}

This approach allows for safe and efficient data retrieval from the database.