To compile and run this program, issue the following commands.
要编译和运行此程序，可以发出如下命令。
To run this program, you need to create a database in PostgreSQL called "test". Then issue the following commands in that database
要运行这个程序，需要在PostgreSQL 中创建一个数据库“test”。
If you run this program, it reads itself and prints the number of lines in the file, which is 7. You can also import it like this.
如果运行这个程序，程序就会读取自己本身，然后输出文件中的行数，也就是7行了。你还可以导入这个模块，如下所示。
Although it may be hard to see in this photocopied edition of the text, the input that the user types appears in blue, as it does on the display when you run this program.
可能在影印版的书中看不出来，用户输入被显示为蓝色，如果你运行程序就会看到了。
You can compile and "run" this program to see if your parser operates correctly before moving on to step 5.
在进行到步骤5之前，您可以编译并“运行”该程序以查看您的解析器运作是否正确。
You can compile and "run" this program to see if your parser operates correctly before moving on to step 5.
在进行到步骤5之前，您可以编译并“运行”该程序以查看您的解析器运作是否正确。
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