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其他函数

除了以上所述各类通用函数，报表还支持微软RDL标准规范中的其他函数，以及一些特殊用途的函数。有关RDL标准规范函数，

参见微软MSDN： https://msdn.microsoft.com/zh-cn/library/ms252112(v=vs.80)

函数

说明

语法

GetFields

返回字段列表集合，仅限数据区域内使用。此函数可令复杂条件的表达式更易于编写。

=GetFields()

InScope

判断当前值是否在某个作用域内。

InScope(<作用域>)

Level

返回当前值在层次结构中的级别。层次结构的第一级是0。

Level()

Level(with scope)

在指定的作用域内，返回当前值在层次结构中的级别。层次结构的第一级是0。

Level(<作用域>)

Lookup

返回外键关联的另一数据集的指定字段值。

Lookup(<主数据集字段>, <关联数据集匹配字段>, <关联数据集数据字段>, <关联数据集名称>)

Lookupset

从指定的数据集中返回多行数值。

LookupSet(<主数据集字段>, <关联数据集匹配字段>, <关联数据集数据字段>, <关联数据集名称>)

Previous

返回指定作用域中的前一个值，例如上一行记录的某一字段的值。

Previous(<表达式>)

RowNumber

返回当前行号

RowNumber()

RowNumber(with scope)

返回指定作用域内的记录行号。

RowNumber(<作用域>)

GetLength

获得数组的长度。参数为0或1，代表数组的维。

<Collection>.GetLength(<Number>)

Item

由Fields/Parameters/ReportItems按名称返回内容。

<Object | Record>.Item(<String>)

Join

连接指定数组的元素或集合的成员，在每个元素或成员之间使用指定的分隔符。

Join(<数组>, <分隔符>)