Appendix A: MDX Function and Operator Reference

This appendix is a detailed reference to the functions and operators of standard MDX, and extensions as implemented in Microsoft's Analysis Services 2000 and 2005. The main body of the appendix lists the functions and operators in alphabetical order, along with any arguments and the result's data type. We have included a pair of indexes at the beginning to help you navigate.

Index to Functions

We have found that two different types of indexes are useful for looking up a function or operator: by name and by return type.

Alphabetical Index

• AddCalculatedMembers (): 703

• Aggregate (): 704

• .AllMembers (): 705

• Ancestor (): 706

• Ancestors (): 706

• And: 707

• Ascendants (): 707

• Avg (): 708

• Axis (): 708

• BottomCount (): 710

• BottomPercent (): 710

• BottomSum (): 710

• Calculate: 710

• CalculationCurrentPass (): 710

• CalculationPassValue (): 711

• Call: 711

• CASE: 712

• .Children: 713

• ClosingPeriod (): 713

• CoalesceEmpty (): 713

• Correlation (): 714

• Count (): 715

• .Count: 715

• Cousin (): 716

• Covariance (): 716

• CovarianceN (): 716

• Crossjoin (): 718

• .Current: 718

• .CurrentMember: 718

• .CurrentOrdinal: 719

• CustomData: 719

• .DataMember: 719

• .DefaultMember: 720

• Descendants (): 720

• .Dimension: 724

• Dimensions (): 724

• Distinct (): 726

• DistinctCount (): 726

• DrillDownLevel (): 726

• DrillDownLevelBottom (): 727

• DrillDownLevelTop (): 728

• DrillDownMember (): 729

• DrillDownMemberBottom (): 731

• DrillDownMemberTop (): 731

• DrillUpLevel (): 732

• DrillUpMember (): 732

• Error (): 734

• Except (): 735

• Existing: 735

• Exists (): 736

• Extract (): 736

• Filter (): 736

• .FirstChild: 737

• .FirstSibling: 737

• Generate (): 738

• Head (): 739

• Hierarchize (): 739

• .Hierarchy: 739

• .Ignore: 740

• Iif (): 740

• Intersect (): 741

• Is: 742

• IsAncestor (): 743

• IsEmpty (): 743

• IsGeneration (): 743

• IsLeaf (): 744

• IsSibling (): 745

• .Item (): 745

• KPICurrentTimeMember (): 746

• KPIGoal (): 747

• KPIStatus (): 747

• KPITrend (): 747

• KPIValue (): 747

• KPIWeight (): 747

• .Lag (): 748

• .LastChild: 748

• LastPeriods (): 748

• .LastSibling: 750

• .Lead (): 750

• Leaves (): 750

• .Level: 751

• Levels (): 751

• LinkMember (): 751

• LinRegIntercept (): 752

• LinRegPoint (): 752

• LinRegR2 (): 753

• LinRegSlope (): 753

• LinRegVariance (): 754

• LookupCube (): 754

• Max (): 755

• MeasureGroupMeasures (): 755

• Median (): 755

• .Members: 756

• Members (): 756

• MemberToStr (): 756

• Min (): 757

• MTD (): 758

• .Name: 758

• NameToSet (): 758

• .NextMember: 759

• NonEmpty (): 759

• NonEmptyCrossjoin (): 759

• NOT: 760

• OpeningPeriod: 760

• Or: 761

• Order (): 761

• .Ordinal: 765

• ParallelPeriod (): 766

• .Parent: 766

• PeriodsToDate (): 768

• Predict (): 769

• .PrevMember: 769

• .Properties (): 769

• .PropertyName: 770

• QTD (): 771

• Rank (): 771

• RollupChildren (): 772

• Root (): 773

• Scope (): 774

• SetToArray (): 774

• SetToStr (): 774

• .Siblings: 776

• StdDev (): 776

• StdDevP (): 776

• StDev (): 776

• StDevP (): 776

• StripCalculatedMembers (): 777

• StrToMember (): 777

• StrToSet (): 777

• StrToTuple (): 778

• StrToValue (): 779

• Subset (): 779

• Sum (): 779

• Tail (): 780

• This (): 780

• ToggleDrillState (): 780

• TopCount (): 780

• TopPercent (): 781

• TopSum (): 782

• TupleToStr: 783

• Union (): 783

• .UniqueName: 784

• .UnknownMember: 785

• Unorder (): 785

• UserName: 786

• ValidMeasure (): 786

• .Value: 787

• Var (): 787

• Variance (): 787

• VarianceP (): 787

• VarP (): 787

• VisualTotals (): 788

• WTD (): 794

• XOR: 794

• YTD (): 794

• KPITrend (): 747

Return Type Index

The functions are all listed here by return type:

Number

• Aggregate (): 704

• Avg (): 708

• CalculationCurrentPass (): 710

• CalculationPassValue (): 711

• CASE: 712

• CoalesceEmpty (): 713

• Correlation (): 714

• Count (): 715

• .Count: 715

• Covariance (): 716

• CovarianceN (): 716

• .CurrentOrdinal: 719

• DistinctCount (): 726

• Iif (): 740

• KPIGoal (): 747

• KPIStatus (): 747

• KPIValue (): 747

• KPIWeight (): 747

• LinRegIntercept (): 752

• LinRegPoint (): 752

• LinRegR2 (): 753

• LinRegSlope (): 753

• LinRegVariance (): 754

• LookupCube (): 754

• Max (): 755

• Median (): 755

• Min (): 757

• .Ordinal: 765

• Predict (): 769

• .Properties (): 769

• .PropertyName: 770

• Rank: 771

• RollupChildren (): 772

• StdDev (): 776

• StdDevP (): 776

• StDev (): 776

• StDevP (): 776

• StrToValue (): 779

• Sum (): 779

• .Value: 787

• Var (): 787

• Variance (): 787

• VarianceP (): 787

• VarP (): 787

String

• CalculationPassValue (): 711

• CASE: 712

• CoalesceEmpty (): 713

• CustomData: 719

• Generate (): 738

• Iif (): 740

• LookupCube (): 754

• MemberToStr (): 756

• .Name: 758

• .Properties (): 769

• .PropertyName: 770

• SetToStr (): 774

• TupleToStr (): 783

• .UniqueName: 784

• UserName: 786

Logical

• And: 707

• Is: 742

• IsAncestor (): 743

• IsEmpty (): 743

• IsGeneration (): 744

Member

• Ancestor (): 706

• CASE: 712

• ClosingPeriod (): 713

• Cousin (): 716

• .CurrentMember: 718

• .DataMember: 719

• .DefaultMember: 720

• .FirstChild: 737

• .FirstSibling: 737

• .Ignore: 740

• .Item (): 745

• KPICurrentTimeMember (): 746

• .Lag (): 748

• AddCalculatedMembers (): 703

• .AllMembers: 705

• Ancestors (): 706

• Ascendants (): 707

• Axis (): 708

• BottomCount (): 710

• BottomPercent (): 710

• BottomSum (): 710

• CASE: 712

• .LastChild: 748

• .LastSibling: 750

• .Lead (): 750

• LinkMember (): 751

• Members (): 756

• .NextMember (): 759

• OpeningPeriod (): 760

• ParallelPeriod (): 766

• .Parent: 766

• .PrevMember: 769

• StrToMember (): 777

• .UnknownMember: 785

• ValidMeasure (): 786

Tuple

• CASE: 712

• .Current: 718

• .Item (): 745

• Root (): 773

• StrToTuple (): 778

Set

• AddCalculatedMembers (): 703

• .AllMembers: 705

• Ancestors (): 706

• Ascendants (): 707

• Axis (): 708

• BottomCount (): 710

• BottomPercent (): 710

• BottomSum (): 710

• CASE: 712

• .Children: 713

• Crossjoin (): 718

• Descendants (): 720

• Distinct (): 726

• DrilldownLevel (): 726

• DrilldownLevelBottom (): 727

• DrilldownLevelTop (): 728

• DrilldownMember (): 729

• DrilldownMemberBottom (): 731

• DrillDownMemberTop (): 731

• DrillUpLevel (): 732

• DrillUpMember (): 732

• Except (): 735

• Existing: 735

• Exists (): 736

• Extract (): 736

• Filter (): 736

• Generate (): 738

• Head (): 739

• Hierarchize (): 739

• Iif (): 740

• Intersect (): 741

• LastPeriods (): 748

• Leaves (): 750

• MeasureGroupMeasures (): 755

• .Members: 756

• MTD (): 758

• NameToSet (): 758

• NonEmpty (): 759

• NonEmptyCrossjoin (): 759

• Order (): 761

• PeriodsToDate (): 768

• QTD (): 771

• .Siblings: 776

• StripCalculatedMembers (): 777

• StrToSet (): 777

• Subset (): 779

• Tail (): 780

• ToggleDrillState (): 780

• TopCount (): 780

• TopPercent (): 781

• TopSum (): 782

• Union (): 783

• VisualTotals (): 788

• Wtd (): 794

• Ytd (): 794

Dimension, Hierarchy, and Level

The following functions return references to dimensions, hierarchies, or levels:

• CASE: 712

• .Dimension: 724

• Dimensions (): 724

• .Hierarchy: 739

• .Level: 751

• Levels (): 751

Miscellaneous

• Call: 711

• Error (): 734

• Scope: 774

• SetToArray (): 774