I have a dataset which looks like this
Name Spend
"First Aid" 2
"Healing Arts" 0
"Surgeon" NULL
I then have three separate textboxes which will be filled with the value of the column which matches the name.
Example: show value of spend in textbox if value of name equals First Aid
for this I've made following expression
=Lookup(Fields!skill_name.Value, "First Aid", Fields!skill_spend.Value, "Skills")
My problem is however that I get an error saying that skill_name is missing its dataset, which doesn't make sense to me as it is informed in the end of the expression (skills)
I think you may be misunderstanding the purpose of Lookup and how it is used. The purpose of the Lookup function is akin to a JOIN in SQL in some ways. Basically, you would have two datasets that each have a matching field with the other. In that scenario, the expression would match on the skill_name field and lookup the skill_spend value and the expression would look something like the following.
=Lookup(Fields!skill_name.Value, Fields!skill_name.Value, Fields!skill_spend.Value, "Skills")
As the documentation shows, the first reference to skill_name is the field you are referencing from the current dataset. The second reference is to the dataset from which you are attempting to look up a value. The third expression is the field you are looking up and the dataset should be the one you are attempting to look up a value from, not the current dataset scope.
Lookup(source_expression, destination_expression, result_expression, dataset)
From the best I can tell, you have a single dataset but separate textboxes that need the correct spend value. I think the following expression will work.
= IIF(Fields!skill_name.Value = "First Aid", Fields!skill_spend.Value, Nothing)
This expression should get the skill_spend value associated with the row "First Aid" only and leave the textbox blank otherwise.
Related
I am in report builder and I have my primary dataset that is from a SQL database, I also then created a second dataset (enter data). I need to compare 2 fields from each dataset to retrieve the correct value from the 2nd dataset and populate a column on my report. I have tried the IIF statements and Lookup statements but I keep getting the error "report item expressions can only refer to fields within the current dataset".
I have a attached a screenshot of what I am trying to do....
The IIF statement I tried to use.. If Acctnum and prodid = each other return IncodeNumber
=IIF((Fields!AcctNum.Value=Fields!AcctNum.Value, "IncodeAccount") AND
(Fields!ProdId.Value =Fields!ProdId.Value, "IncodeAccount")),(Fields!IncodeNumber.Value, "IncodeAccount"),"True")
See code in my problem.
You need to use LOOKUP(). The problem with LOOKUP() is that is can only compare a single value from each dataset. However, we can easily get around this issue by concatenating the two values you need to compare.
Note: This assumes the expression will be in a tablix that is bound to your first dataset and that IncodeAccount is your second dataset - the values you want to lookup. If this is not the case just adjust the expression accordingly
So for you, you probably need to do something like this..
=LOOKUP(
Fields!AcctNum.Value & "||" & Fields!ProdId.Value,
Fields!AcctNum.Value & "||" & Fields!ProdId.Value,
Fields!IncodeNumber.Value,
"IncodeAccount"
)
I've used two pipe symbols to join the values to avoid incorrect matches being found. e.g. Account 123 and product ID 4567 would incorrectly match to Account 1234 and product ID 567 as they would both be 1234567 when joined. By using the || the match would be 123||4567 and 1234||567 respectively.
You may need to convert the values to string using CStr()
Alternative approach
If you are going to do this 'join' multiple times in the same dataset then you could add a calculated column to the dataset that concatenates the two columns. Then you can use this single field in the lookup which will make things a little simpler.
Or, you could do this concatenation in a database view which would make things even easier.
I have a table with three columns, in column 1 I have a name and column 2 I have a quantity.
I want to look up column 1 and return the value in column 2.
I used to the expression below and it wouldn't return what I wanted.
=Lookup(fields!NAME.Value, "Paul" ,1 , 0)
Could anybody tell me what expression I need to use?
You are close, sort of. To use the Lookup function properly, you need to change some things. Here is an example using the Lookup function.
=Lookup(Fields!Field1.Value, Fields!Field1.Value, Fields!Field2.Value, "DatasetB")
It takes 4 parameters. The first is the field/value from the current (in scope) data set that you want to be the value to match in the lookup data set. The second is the field in the lookup data set to match on. The third in the field to return when a match is found, and the last parameter is the name of the lookup data set.
Based on the expression in your question, it may actually work like this:
=Lookup("Paul" , Fields!NAME.Value, Fields!QUANTITY.Value , "DataSet2")
Of course, hard coding the name in the first parameter is probably not what you want to do.
I want to filter my column, let's call it AllStudentID from dataset1 with another column from a different datset.
Dataset1 had many column such as AllStudentID, Class, Time, Location.
Dataset2 has other columns but i'm focused on a similar column called OnCampusID.
I've tried looking into using a filter but since the report itself has the columns from Dataset1, i run into an issue where if I select the column in dataset2, it always gives a First(OnCampusID). And I don't want that.
I looked into IIF() but again, i'm using a column from a different datset plus if let's say that they are NOT equal, I don't want to display anything, instead of putting something there. I know that you have to put a result if true and a result if false.
If I"m thinking of it in terms of SQL statements, it's like having a WHERE clause WHERE AllStudentID=OnCampusID.
I tried running a Parameter but I don't want the select part on the top but rather have the report filtered already.
Am I missing something? I know it has to be simple.
Mind you, the following example above is just an example i made up, not the real thing.
Assuming that each OnCampusID only appears once in Dataset2 then you can do a Lookup expression to filter it:
=IIF(IsNothing(Lookup(Fields!AllStudentID.Value, Fields!OnCampusID.Value, Fields!OnCampusID.Value, "Dataset2")), False, True)
If OnCampusID appears more than once in Dataset2 then do the same thing using LookupSet.
To get the graduate field from Dataset2 just to a Lookup in the Value of the cell, like so:
=Lookup(Fields!AllStudentID.Value, Fields!OnCampusID.Value, Fields!Graduate.Value, "Dataset2")
I have an ID column in a table in my Reporting Services report. I want to title each page of my report based on a corresponding name field.
When I try to create an expression for the group-level PageName property, I see that there is a Lookup() function in SSRS. The example given in the description looks like this:
=Lookup(Fields!SaleProdId.Value, Fields!ProductID.Value, Fields!Name.Value, "Product")
The problem is that these fields are presumably in the same dataset used to create the report table. In my case, however, the name field is in another dataset of my project.
Is there a way to span report datasets to lookup up a label not in the current table's dataset?
Yes, that's exactly what the Lookup(...) function is for. The last parameter is the name of the data set that you would like to look in for your value.
From:
http://technet.microsoft.com/en-us/library/ee210531.aspx
Lookup(source_expression, destination_expression, result_expression, dataset)
Parameters
source_expression (Variant) An expression that is evaluated in the current scope and that specifies the name or key to look up. For example, =Fields!ProdID.Value.
destination_expression(Variant) An expression that is evaluated for each row in a dataset and that specifies the name or key to match on. For example, =Fields!ProductID.Value.
result_expression(Variant) An expression that is evaluated for the row in the dataset where source_expression = destination_expression, and that specifies the value to retrieve. For example, =Fields!ProductName.Value.
dataset A constant that specifies the name of a dataset in the report. For example, "Products".
Let me know if you need more explanation.
My dataset currently has 12 rows of data. Each representing data for a month. I would like to have variance of a column between to rows, the rows being last & last but one i.e., latest month and previous month's data.
It could have been simple if I were to work on tablix but thats not the case. I want those values for a textbox.
Any ideas on it anyone?
I hope you are using SSRS 2008R2:
R2 introduced the Lookup function that is perfect for this scenario.
=Lookup( Fields!ProductUID.Value ,Fields!ProductID.Value,Fields!Price.Value,"PriceDataSet")
The Lookup function above will evaluate the first parameter ("Fields!ProductUID.Value") in the current dataset, then look for a matching value in the field specified in the second parameter ("Fields!ProductID.Value") in the dataset specified in the fourth parameter. The value of the third parameter is then evaluated in that row of the dataset and returned.
A little convoluted, but very helpful.
In your case, you can use this in a textbox with a calculated a static number:
=Lookup(
Month(DateAdd(DateInterval.Month, -1, GetDate())),
Fields!MonthID.Value,
Fields!Name.Value,
"DataSet1")
This should calculate a number for last month, then look for a match in DataSet1.
In this example I have a tablix with Statecode and name as below
enter image description here
Suppose you want to display the name of state of CA, write an expression as -
=Lookup(
"CA" ,
Fields!StateCode.Value,
Fields!StateName.Value,
"ReportData"
)
This will return 'California' in the text box
I ran across this post while trying to solve a similar problem but with columns of double data type. Not sure why but SSRS did not want to return my first row using LOOKUP in combination with ROW_NUMBER in SQL(If someone can solve that all the better). I ended up using a SUM(IIF) instead. Hopefully, this is useful for someone else.
=Sum(IIF(Fields!RowNum.Value=1,CDBL(Fields!MyNumericColumn.Value),CDBL(0)))
Note: If SSRS complains about data types, just cast both parts of the IIF to the desired data type.