我可以在 SSRS 表达式中使用 WHERE 子句吗？

Question

I saw the post on WHERE clause in SSRS expression . I am also trying to do a where clause, but in a different way. I need to show ItemDesc when ItemId = 4. I set a parameter so that it will always equal 4 for this cell. Now I just need the matching description field. I cannot hard code it because the description may change one day. Is there a way to associate the two fields?

=IIF(Parameters!ItemID_4.Value = 4, Fields!ItemDesc.Value,"")

I am converting from Crystal Reports to SSRS. This first image is the output from CR. I only need to show that ItemDesc in that top left cell.

This next image is from SSRS. It is not limiting the descriptions. It seems to be doing what my expression is saying. ItemID = 4, so display all ItemDesc values but the two fields are not associated right now. I need it to only show the matching value.

Thank you for your help.

Answer 1

I cannot hard code it because the description may change one day.

You are hard coding the parameter anyway by trying to do it that way. I don't think you need a parameter to achieve the result unless you are restricted from adjusting the dataset query.

If you are using an embedded SQL query for your dataset, I would just put a filter in WHERE clause: WHERE ItemID = 4

Another way if you can't adjust the query is to go to Report Data view > Right click on the dataset for your table, "Dataset Properties" > go to the "Filters" tab and add a filter with these settings: Expression = ItemID, Operator = "=", Value = "4" (or "@ItemID" if you want to keep your parameter).