下面的代码将建立到 SAMPLE 数据库的连接，并返回 SYSCAT 模式中所有编目视图的一个列表

The following code establishes a connection to the SAMPLE database and returns a list of all the catalog views in the SYSCAT schema

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如果 IN 列表中包含参数标记符或主机变量，使优化器不能使用编目统计信息来确定选择性，就会出现这种情况。

This can occur if the IN list contains parameter markers or host variables which prevent the optimizer from using catalog statistics to determine the selectivity.

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选择' System DSN '选项卡，如果对SAMPLEDB Data Source进行了正确编目，那么您将在列表中看到这个数据源。

Select the 'System DSN' TAB and if you cataloged the SAMPLEDB Data Source correctly you'll see it in this list.

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