这允许使用一个查询根据提供给参数的不同的值返回不同的结果。
This allows one query to be used to return different results based on the different values provided to the parameter.
根据需要为各种配置参数提供适当的值。
Provide the appropriate values for various configuration parameters according to your requirements.
图2显示了根据表2提供的值编辑后的配置文件(查看文本格式的图2)。
Figure 2 shows the configuration file, after it was edited according to the values provided in Table 2. (View a text version of Figure 2.)
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