I am pretty new to the DAX world. I am trying to do get distinct records on multiple columns in DAX query similar to the way I do in SQL. I tried joining two tables based on the model in the Query Designer which gave me the following query.
EVALUATE SUMMARIZECOLUMNS(
'Dim_Products'[SaleCode],
'Dim_Products'[ProducttName],
'Dim_TimeZone'[StartDate],
'Dim_TimeZone'[StartTime],
'Dim_TimeZone'[EndDate],
'Dim_TimeZone'[EndTime],
'Dim_TimeZone'[Variation],
"Fact_Sales_Count", [Fact_Sales_Count]
)
Running the above is giving duplicate records. How do I just get distinct records as I am trying to call this from SSRS?
Thanks!
Look at: https://www.sqlbi.com/articles/introducing-summarizecolumns/
You switch from "group by" columns to "summary" columns by convention in the argument list to SUMMARIZECOLUMNS.
EG:
EVALUATE SUMMARIZECOLUMNS(
'Dim_Products'[SaleCode],
'Dim_Products'[ProducttName],
'Dim_TimeZone'[StartDate],
'Dim_TimeZone'[StartTime],
'Dim_TimeZone'[EndDate],
'Dim_TimeZone'[EndTime],
'Dim_TimeZone'[Variation],
"Fact_Sales_Count", sum([Fact_Sales_Count])
)
Just in case if this helps someone in future.
EVALUATE
DISTINCT(
SELECTCOLUMNS('Dim_Products',
'Dim_Products'[SaleCode],
'Dim_Products'[ProducttName],
'Dim_TimeZone'[StartDate],
'Dim_TimeZone'[StartTime],
'Dim_TimeZone'[EndDate],
'Dim_TimeZone'[EndTime],
'Dim_TimeZone'[Variation]))
And, if we need to add a filter:
EVALUATE
DISTINCT(
SELECTCOLUMNS(
FILTER('Dim_Products', 'Dim_Products'[SaleCode] = 123 && ('Dim_Products'[ProducttName] = "ABC" || 'Dim_Products'[ProducttName] = "XYZ" )),
'Dim_Products'[SaleCode],
'Dim_Products'[ProducttName],
'Dim_TimeZone'[StartDate],
'Dim_TimeZone'[StartTime],
'Dim_TimeZone'[EndDate],
'Dim_TimeZone'[EndTime],
'Dim_TimeZone'[Variation]))
Related
HANA Version: SP12
All,
I've successfully created Calc Views with INPUT_PARAMETERS as described by Lars in many blogs and forums. While these views work without issue when querying directly for single and multi inputs, I'm encountering an issue with performing joins on the Calc View itself within a stored proc or table function.
Example:
"BASE_SCHEMA"."BASE_TABLE_EXAMPLE" - record count(*) ~ 2million records
Keys: Material (20k distinct), Plant (200 distinct)
"_SYS_BIC"."CA_EXAMPLE_PRODUCTIVITY"
Input Parameters: IP_MATNR (nvarchar (5000)), IP_PLANT (nvarchar(5000))
Issue #1: The maximum value for nvarchar is 5000. Unable to utilize multiple inputs within the parameter if the count of distinct characters are 5000+.
Issue #2: How to use PLACEHOLDER logic in the same method of performing an INNER_JOIN in SQL.
base_data =
select
PLANT
,MATERIAL
from "BASE_SCHEMA"."BASE_TABLE_EXAMPLE"
group by PLANT,MATERIAL;
I would think to perform the below but the output would cause issues when concatenating multiple strings for use within input parameter of nvarchar(5000).
select
string_agg(PLANT,''',''') as PLANT
,string_agg(MATERIAL,''',''') as MATERIAL
into var_PLANT, var_MATERIAL
from
(
select
PLANT
,MATERIAL
from :base_data
);
While I'm successful up to this point, once adding the variables into the PLACEHOLDER of the Calc View, it fails stating that I'm passing too many characters to the IP. Any suggestions??? Thanks in advance.
base_calc =
select
PLANT
,MATERIAL
,MATERIAL_BU
,etc....
from "_SYS_BIC"."CA_EXAMPLE_PRODUCTIVITY"
(PLACEHOLDER."IP_MATNR"=> :var_MATERIAL, --<---Fails here. :(
PLACEHOLDER."IP_PLANT"=> :var_PLANT);
Question raised on SAP SCN. Located here!
Did you tried to use WHERE clause instead of PLACEHOLDER?
base_calc =
select
PLANT,
MATERIAL,
MATERIAL_BU,
etc....
from "_SYS_BIC"."CA_EXAMPLE_PRODUCTIVITY"
WHERE MATERIAL = var_MATERIAL AND PLANT = var_PLANT;
I need to create calculate table for the report in PowerBI Desktop.
I know how to do that in t-sql but I am unable to interpret it to DAX.
So should I use t-sql and add this query using "Get Data"?
Or should I create calculate table using DAX?
Which one is more efficient?
select distinct PolicyNumber,
ReserveStatus,
case when ReserveStatus = 'Open' then 1 else 0 end as OpenStatus
from RockhillClaimsDataFeed_PBI
group by PolicyNumber,ReserveStatus
Result looks like that:
can somebody help?
This is achievable by creating a calculated table in Power BI, with similar syntax using SELECTCOLUMNS and DISTINCT.
RockhillClaimsSummary =
DISTINCT(
SELECTCOLUMNS(
RockhillClaims,
"PolicyNumber", RockhillClaims[PolicyNumber],
"ReserveStatus", RockhillClaims[ReserveStatus],
"OpenStatus", IF(RockhillClaims[ReserveStatus] = "Open", 1, 0)
)
)
Results:
Using SQL Server Management
Using MVC VS 2013 for Web
Being in a Controller
Here materialnumb it's a LINQ query that always return only one value.
Being the following...
var materialnumb = (from r in db.MaterialNumber
where r.MaterialNumber == 80254842
select r.MaterialNumber);
I have another LINQ query from a SQL view that involves several other tables with inner join statements and so on (which includes the previous table db.MaterialNumber) that goes like this:
var query = (from r in db.SQLViewFinalTable
where r.MaterialNumber == Convert.ToInt32(materialnumb.MaterialNumber)
select r
I want to sort all the materials by the retrieved material number from the first query but it drops the following error when I try to pass the query as a model for my View:
LINQ to Entities does not recognize the method 'Int32
ToInt32(System.String)' method, and this method cannot be translated
into a store expression.
I assume this is because the query is an object even if its has just one value so it can't be converted into a single Int32.
Even more, the query it's not being executed, it's just a query...
So, how can achieve my goal?
Additional information: I tried to convert the query outside the "final" query. It still doesn't work.
Additional information: This is just an example, the true query actually has several more other querys embedded and this other querys have also other querys in them, so I need a practical way.
Additional information: I have also tried to convert the query into a string and then again into an int.
Try this:
var materialnumb = (from r in db.MaterialNumber
where r.MaterialNumber == 80254842
select r.MaterialNumber).FirstOrDefault();
var query = from r in db.SQLViewFinalTable
where r.MaterialNumber == materialnumb
select r
But I can not get whay are you filtering by 80254842 and selecting the same value? You can do directly:
var query = from r in db.SQLViewFinalTable
where r.MaterialNumber == 80254842
select r
I have an entity framework query that has this at the heart of it:
SELECT 1 AS dummy
FROM [dbo].[WidgetOrder] AS widgets
WHERE widgets.[SomeOtherOrderId] = N'SOME VALUE HERE'
The execution plan for this chooses an index that is a composite of three columns. This takes 10 to 12 seconds.
However, there is an index that is just [SomeOtherOrderId] with a few other columns in the "include". That is the index that should be used. And when I run the following queries it is used:
SELECT 1 AS dummy
FROM [dbo].[WidgetOrder] AS widgets
WHERE widgets.[SomeOtherOrderId] = CAST(N'SOME VALUE HERE' AS VARCHAR(200))
SELECT 1 AS dummy
FROM [dbo].[WidgetOrder] AS widgets
WHERE widgets.[SomeOtherOrderId] = 'SOME VALUE HERE'
This returns instantly. And it uses the index that is just SomeOtherOrderId
So, my problem is that I can't really change how Entity Framework makes the query.
Is there something I can do from an indexing point of view that could cause the correct index to be selected?
As far as I know, since version 4.0, EF doesn't generate unicode parameters for non-unicode columns. But you can always force non-unicode parameters by DbFunctions.AsNonUnicode (prior to EF6, DbFunctions is EntityFunctions):
from o in db.WidgetOrder
where o.SomeOtherOrderId == DbFunctions.AsNonUnicode(param)
select o
Try something like ....
SELECT 1 AS dummy
FROM [dbo].[WidgetOrder] AS widgets WITH (INDEX(Target_Index_Name))
WHERE widgets.[SomeOtherOrderId] = N'SOME VALUE HERE'
This query hint sql server explicitly what index to use to get resutls.
My query in HQL is basically:
select functionA(a, :paramA), functionB(b, :paramB), functionC(c, :paramC), sum(d)
from tableA
groupby by functionA(a, :paramA), functionB(b, :paramB), functionC(c, :paramC)
However this gets turned into SQL of
select functionA(a, #param0), functionB(b, #param1), functionC(c, #param2), sum(d)
from tableA
groupby by functionA(a, #param3), functionB(b, #param4), functionC(c, #param5)
Now obviously this is going to throw a 'blah' is invalid in the select list because.... error as the group by clause doesn't match the select clause. I'm about to change this to a string format so I can get on with some productive work but if anyone has the answer as to why NHibernate will not reuse the same named query input the 2 times it is used that would be much appreciated.
A similar question seems to have been asked here with no real answer either.
This has been solved in NHibernate 3.0.0.Alpha1. You can get it here