如果变量没有定义，则语句被标为有语法错误。
If the variable is not defined, the statement is flagged as a syntax error.
如果希望只为特定的应用程序启动事件监视器，那么用CREATE EVENT monitor语句语法指定事件条件，见图30。
If you want to start the event monitor only for specific applications, specify an event condition in the CREATE event monitor statement syntax shown in Figure 30.
如果您是脱机操作(即，Connection页面选择的是No Connection)，您仍然可以验证您正在编写的SQL和XQuery语句的语法。
If you are working offline (that is, with No Connection selected on the Connection page), you can still validate the syntax in the SQL and XQuery statements that you are writing.
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