executeMD: olapR executeMD Methods

Άρθρο
02/28/2023

Takes a Query object or an MDX string, and returns the result as a multi-dimensional array.

Usage

  executeMD(olapCnn, query)
  executeMD(olapCnn, mdx)

Arguments

`olapCnn`

Object of class "OlapConnection" returned by OlapConnection()

`query`

Object of class "Query" returned by Query()

`mdx`

String specifying a valid MDX query

Details

If a Query is provided: executeMD validates a Query object (optional), generates an mdx query string from the Query object, executes the mdx query across an XMLA connection, and returns the result as a multi-dimensional array.

If an MDX string is provided: executeMD executes the mdx query across an XMLA connection, and returns the result as a multi-dimensional array.

Value

Returns a multi-dimensional array. Returns an error if the Query is invalid.

Notes

References

Creating a Demo OLAP Cube (the same as the one used in the examples): Multidimensional Modeling (Adventure Works Tutorial)

Examples


 cnnstr <- "Data Source=localhost; Provider=MSOLAP;"
 olapCnn <- OlapConnection(cnnstr)

 qry <- Query()

 cube(qry) <- "[Analysis Services Tutorial]"
 columns(qry) <- c("[Measures].[Internet Sales Count]", "[Measures].[Internet Sales-Sales Amount]")
 rows(qry) <- c("[Product].[Product Line].[Product Line].MEMBERS") 
 pages(qry) <- c("[Sales Territory].[Sales Territory Region].[Sales Territory Region].MEMBERS")

 result1 <- executeMD(olapCnn, qry)

 mdx <- "SELECT {[Measures].[Internet Sales Count], [Measures].[Internet Sales-Sales Amount]} ON AXIS(0), {[Product].[Product Line].[Product Line].MEMBERS} ON AXIS(1), {[Sales Territory].[Sales Territory Region].[Sales Territory Region].MEMBERS} ON AXIS(2) FROM [Analysis Services Tutorial]"

 result2 <- executeMD(olapCnn, mdx)

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