在SSRS中的LookupSet中使用String.Contains

时间:2018-01-20 15:16:28

标签: vb.net tsql reporting-services

我有两个名为A和B的数据集.A有一个名为Paper的字段。 B有两个名为Subject和Grade的字段。

这些字段中的数据类似于:

+---------+-------+       +-----------------------------+
| Subject | Grade |       |            Paper            |
+---------+-------+       +-----------------------------+
| English | A     |       | English Literature Autumn 1 |
| Maths   | D     |       | Further Maths Spring 2      |
| Physics | F     |       | Physics                     |
+---------+-------+       +-----------------------------+

我通常使用的LookupSet如下:

=LookupSet(Fields!Paper.Value, Fields!Subject.Value, Fields!Grade.Value, "B")

但当然它只返回 F ,因为物理是唯一相同的字段。我需要能够回归其他成绩的东西。我试过了:

=LookupSet(Fields!Paper.Value, Fields!Subject.Value.IndexOf(Fields!Subject.Value) >= 0, Fields!Grade.Value, "B")

或者

=LookupSet(Fields!Paper.Value, Fields!Subject.Paper.ToLowerInvariant().Contains(Fields!Subject.Value), Fields!Grade.Value, "B")

有没有办法在不改变数据的情况下实现它?

1 个答案:

答案 0 :(得分:1)

如果源是SQL Server,则可以使用LIKE在T-SQL中执行此操作。

SQL示例

WITH
subject_grades
AS
(
    SELECT tbl.* FROM (VALUES
      ( 'English', 'A')
    , ( 'Maths', 'D')
    , ( 'Physics', 'F')
    ) tbl ([Subject], [Grade]) 
)
, 
subject_papers
AS
(
    SELECT tbl.* FROM (VALUES
      ( 'English Literature Autumn 1')
    , ( 'Further Maths Spring 2')
    , ( 'Physics')
    ) tbl ([Paper]) 
)
SELECT
      sp.Paper
    , sg.Grade
FROM 
    subject_papers AS sp
    LEFT JOIN subject_grades AS sg ON sp.[Paper] LIKE '%' + sg.[Subject] + '%'

db<>fiddle

结果

results