This is a way to display error messages or diagnostics; the code has a number of examples of diagnostic messages sent to this stream, many of them commented out in the release.
这是一种显示错误消息或诊断消息的方法；代码将大量诊断消息示例发送到这个流中，其中很多在发行版中已经被注释掉了。
On DB2, the error string of the latest failed SQL statement can be retrieved using the GET DIAGNOSTICS statement, as shown in Table 4.
在DB 2中，最后一个失败的sql语句的错误字符串可以通过使用GETDIAGNOSTICS语句检索，参见表4。
The better the diagnostics, the less chance of the operator missing an error message and continuing with a broken keyring.
诊断性能越好，操作员错过一条错误信息并继续使用一个错误的密匙环的机会就越少。
Diagnostics improvements - More information is provided in error messages when a composition error occurs.
诊断功能上的增强——当组合错误发生时将提供更多的错误信息。
In addition to using stdin and stdout, UNIX commands can emit error messages to a special outlet that's set aside (by convention, not mandate) for diagnostics.
除了使用stdin和stdout之外，UNIX命令还将生成的错误消息输出到一种特殊出口以便进行诊断，该出口通常并不是强制的。
In addition to using stdin and stdout, UNIX commands can emit error messages to a special outlet that's set aside (by convention, not mandate) for diagnostics.
除了使用stdin和stdout之外，UNIX命令还将生成的错误消息输出到一种特殊出口以便进行诊断，该出口通常并不是强制的。
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