使用SQL客户端或文本编辑器打开SQL文件。

SQL files can be opened and executed using various tools depending on your needs and the database system you are working with. Below are some common methods:

1. Database Management Tools: Tools like MySQL Workbench, phpMyAdmin for MySQL, or SQL Server Management Studio for Microsoft SQL Server provide GUI interfaces to manage databases and run SQL scripts. You simply connect to your database and open the SQL file from within these applications.

2. Command Line: If you prefer command line tools, you can use commands such as mysql for MySQL, psql for PostgreSQL, or sqlplus for Oracle. These tools allow you to execute SQL scripts directly from the terminal or command prompt.

3. IDEs and Code Editors: Integrated Development Environments (IDEs) like Visual Studio Code, IntelliJ IDEA, or Eclipse often have plugins or extensions that support SQL syntax highlighting and even executing queries against a connected database. This is useful for developers who write and test SQL code frequently.

4. Online SQL Editors: For quick testing or simple queries, online SQL editors like DB Fiddle or SQLFiddle can be used. They don't require any setup and are great for sharing queries with others.

Each tool has its own strengths, so choosing the right one depends on factors such as the complexity of your SQL scripts, the specific database system you're using, and your personal preferences regarding GUI versus command line interfaces.