Requirement: This value is required to be unique among document flows for Web Service protocol.
要求：在Web服务协议的文档流中该值必须是唯一的。
Additionally, a usage of the requirement can also be set as required, optional, or prohibited through the use attribute (the default value is required).
此外，需求的使用还可以通过use属性设置为required,optional或prohibited(默认值为required)。
As at date measures are a specialised variant of a normal measure which are calculated for a given date and can be used whenever a measure value is required for a particular date in the calendar only.
AsatDate度量是常规度量的一种特殊变体，针对给定日期加以计算，且每当日历中的一个特定日期需要一个度量值时，都会用到它。
A literal value is required. Please specify a value before adding a new parameter to the invocation parameter list.
要求参数值。请在向调用参数列表添加新参数之前指定一个值。
This can accrue a large performance gain for the program as compared to issuing a completely new SQL statement every time a new value is required in a WHERE clause.
与每次where子句中需要一个新值就发出一条全新的sql语句相比，这可以给程序增加很大的性能收益。
This can accrue a large performance gain for the program as compared to issuing a completely new SQL statement every time a new value is required in a WHERE clause.
与每次where子句中需要一个新值就发出一条全新的sql语句相比，这可以给程序增加很大的性能收益。
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