[英]How to remove multiple values from SSRS parameter drop down
I have a report where I want to add a parameter as a drop down. 我有一个报告,我想在其中添加一个参数作为下拉列表。 The database has more than 13,000 records and the parameter I want to add is of the building names in the record.
该数据库有13,000多个记录,我要添加的参数是记录中的建筑物名称。 There are around 6 different building names.
大约有6个不同的建筑物名称。 When I add the parameter by taking Values from a query and passing the building name as the value, the drop down repeats the 6 building names of all 13,000 records rather than just the 6 building names.
当我通过从查询中获取值并将建筑物名称作为值来添加参数时,下拉列表将重复所有13,000条记录的6个建筑物名称,而不仅仅是6个建筑物名称。
Is there a way where I can filter it to show the 6 building names and then show the records related to that building name? 有什么方法可以过滤它以显示6个建筑物名称,然后显示与该建筑物名称相关的记录?
SELECT new_studentid, new_studentinformationid, new_firstname, new_lastname, new_building, new_busnumber, new_grade, new_primaryhomeroom,documentbody FROM StudentInformation WHERE(new_building = @new_building) AND (new_primaryhomeroom = @new_primaryhomeroom)
You will need to make a query just for the parameter drop-down. 您只需要针对参数下拉列表进行查询。 It should probably be something like this:
可能应该是这样的:
SELECT DISTINCT new_building
FROM StudentInformation
Then for the HomeRoom parameter, use this query: 然后对于HomeRoom参数,使用以下查询:
SELECT DISTINCT new_primaryhomeroom
FROM StudentInformation
WHERE(new_building= @new_building)
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