This function asks the user to input the start date and end dates, and then calculates the number of actual working days by deducting the list of user-defined weekend days and holidays.

此功能要求用户输入开始日期和结束日期。然后通过扣除用户定义的周末和假期列表来计算实际的工作日数。

youdao

An operation can be a relational operator, a system - or user-defined function, or an SQL operator, such as GROUP BY, ORDER BY, and so on.

操作可以是一个关系运算符，或者系统或用户定义的函数，也可以是一个sql操作符，例如GROUP BY、ORDER BY等。

youdao

In addition, you can create a user-defined trace by sending a string to the soltrace.out file by using the writetrace function in the procedure: writetrace (string VARCHAR).

此外，可以通过在过程中使用writetrace函数，向soltrace . out文件发送一个字符串，从而创建一个用户定义的跟踪：writetrace (string VARCHAR)。

youdao