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.
Related
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.
I've been struggling with an IIF error when trying to create a variable aggregate.
I'm using Report Builder 3.0
I have a report where users determine what fields are in a report. These fields are passed as a multivalue parameter. I use a lookup from a different dataset to determine its placement in the report, and using the same order dataset to determine if the field is numeric or not (meaning I want to sum the value based on row-level grouping). The headers pull in using the same field lookup, which works fine. At the row level I'm trying to return either the sum of the field value based on row grouping, or if non-numeric, return the value. Based on similar posts I understand that both the true and false parts are processed. I attempted to offset this error by nesting another IIF. If I remove the sum function the data returns non-numeric data fine. However if I include the sum function numeric data is processed fine however non-numeric data returns #error.
What am I missing?
Here is a definition of the data I'm referencing below:
lookupvalue: returns the fields selected by the user based on predefined order in a stored procedure.
Fieldisnumeric: indicates if the field selected is numeric or not, 0 is false, 1 is true
Fielditem: the field item in the tablix being referenced
dtsselectedfields: the dataset I'm looking up the column order and numeric properties of a field.
The number 1 indicates the first position in the variable count of fields selected by the user. Additional fields are hidden based on the count of fields passed in the parameter and are incremental (e.g 1-n).
=iif(Lookup(1, Fields!LookupValue.Value,
Fields!FieldIsNumeric.Value,"dtsSelectedFields")=0,
Fields(Lookup(1, Fields!LookupValue.Value, Fields!FieldItem.Value,
"dtsSelectedFields")).Value,iif(Lookup(1, Fields!LookupValue.Value,
Fields!FieldIsNumeric.Value, "dtsSelectedFields")=0,
Fields!MV.Value,sum(Fields(Lookup(1, Fields!LookupValue.Value,
Fields!FieldItem.Value, "dtsSelectedFields")).Value)))
****edit 12/1/2015****
For additional clarity, I'm providing additional details. Below is 'dtsSelectedFields' dataset.
FieldItem_____LookupValue_____FieldIsNumeric
Item1Desc__________1__________________0
Item1Total__________2__________________1
Item2Desc__________3__________________0
Item2Total__________4__________________1
Let's say I have one column of data, and this column would first look for a LookupValue of 1. This would return the FieldItem, 'Item1Desc'. Because this field is not numeric, I would want to return the value of Item1Desc. However let's assume my first selection was actually 'Item1Total' and I don't want to return the non-numeric Item1Desc field. In this case, because 'FieldIsNumeric'=1 indicating a numeric field, I want to take the sum of this field.
Is it possible to nest an aggregating function in an IIF statement on only one part of an IIF statement? I.e. the true part or false part?
And if so, what am I doing wrong?
An example of the tablix:
sample layout
Column 1 Header____________Column 2 Header___________Column 3 Header
Column 1 Data______________Column 2 Data_____________Column 3 Data
Sample data
Product___________________Country of Origin_________________Units
ABC Envelopes___________________China______________________15
LMN Packets_____________________India_______________________30
In the example above, user selects 3 columns, 'Product', 'Country of Origin', and 'Units'. There are other fields available that would cause multiple rows if I grouped by them in the stored procedure (for example acquisition price). Based on the lookup I return the column description as a header. The row-level detail is described as above (e.g. Return the product name and country of origin, but sum up the units).
As a workaround for my issue above, I found an (ugly?) solution.
As mentioned above, a user can select any number of columns and the report organizes them in columns based on a predefined order according to a stored procedure. (E.g. a product description would come before the sum of the units if those two columns were chosen, but a product ID may come before the product description, but only if the ID was chosen.)
For every possible number of columns a user can select, I added two columns in the report (i.e. two for each field).
The first two columns will reference the lookupvalue=1. I then set the expression of each field in the detail to 1) a sum of the value, or 2) the value itself. I then set the column visibility to the results of the 'FieldIsNumeric' column. So the summed numeric column which would return an error for non-numeric data would be hidden when FieldIsNumeric=0, and the non-numeric column referencing the lookup value =1 would be shown, and vice versa.
Needless to say additional columns would follow the same logic in sets of two, each referencing the sequential lookup value (e.g. columns 3 and 4 would reference lookupvalue=2, columns 5 and 6 would reference lookupvalue=3, and so forth. Each column within the matching pair would be displayed or hidden based on the returned value of FieldIsNumeric in the same lookup dataset.
I'm definitely open to suggestions, but thought I'd post this as a workaround solution.
I'm trying to create an expression with a missing column. as in the column is not returned from the query but does exist in the list of fields.
The problem I'm having is that every time I do an expression and one of the parameters is from a field that doesn't have a return from query the query fails silently. the following example is looking at a field "test" that, as I said, exists in the list of fields but is not returned from the query, how can I have this is statement send "alert"??
=IIF(Fields!test.IsMissing,"alert",Fields!test.Value)
The reason that I don't return the field is that the columns are dependent on the parameters I enter in the procedure (so they could be used or not depending on what the user is asking)
Thank you
From reading your question I think, you have dynamic columns which will be returns conditionally
So what you should do is,
1) Create the parameter in the parameter list and set it as the internal and assign the field value to that parameter, suppose the parameter is dyanmicfiledvalue
2) Change your expression as,
=IIF(IsNothing(Parameters!dyanmicfiledvalue.value),"alert", Parameters!dyanmicfiledvalue.value )
that should do it. Let me know in case of issues.
Or if you want to check null or empty value for that column just change as
=IIF(IsNothing(Fields!test.value),"alert",Fields!test.value)
How do I pass two dynamic values returned from one dataset as parameters to another dataset to return one row of a second dataset in a cell?
For each cell in a header row I need to determine A) Which column to get based off the meal period, and then B) take that value and pass it and another parameter to a query to get one of the columns (I'll take first) from the query.
I am already using cascading parameters, but I'm not sure if or how to use them in this scenario.
Example:
#SalesReceipt
#MealPeriod (A cascaded parameter. There should be one meal period per receipt)
Expression in an example cell:
=IIF(Parameters!#MealPeriod.value = "Lunch", Fields!Burger_Lunch_Type.value, Fields!Burger_Dinner_Type.value)
That returns either the lunch or dinner Type from a fact table, depending on meal period.
Given the Type and Item ID I need to get a value from another query or dataset and add that text to the cell expression. So the expression would look something like:
=IIF(Parameters!#MealPeriod.value = "Lunch", Fields!Burger_Lunch_Type.value, Fields!Burger_Dinner_Type.value) & " and " & (select top row from dataset given the correct type field and Item ID)
The cell should look like: Table1.Type and Table2.Breadtype AKA Bacon Burger and Whole Wheat.
Does that make sense?
I would use the dreaded Lookup function for this:
http://technet.microsoft.com/en-us/library/ee210531.aspx
I say dreaded because it is notoriously tricky to code and debug. I've even seen a case where a failed Lookup caused the entire row to disappear!
The Lookup target dataset itself should not use the parameters required for the Lookup - it's purpose is to return all the possible rows needed by the Lookup function.
If you need to use two columns as the key to your lookup, you can concatenate them e.g.
Fields!Burger_Lunch_Type.value & "|" & Fields!ItemID.value
Good luck!
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.