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    <p>Here is a reasonably equivalent solution using Pivot.</p> <pre><code>Declare @Comm TABLE ( [CommunicationId] uniqueidentifier PRIMARY KEY DEFAULT NEWID(), [Type] nvarchar(1), -- ('C' for call, 'M' for meeting, etc.) [Date] datetime ) Declare @Person TABLE ( [PersonId] uniqueidentifier PRIMARY KEY DEFAULT NEWID(), [Type] Nvarchar(1) -- ('E' for employee, 'C' for customer) ) Declare @PersonComm TABLE ( [PersonId] uniqueidentifier, -- (Can contain GUIDs for employees or clients, see Person Table below) [CommunicationId] uniqueidentifier ) INSERT INTO @Person(Type) Select 'C' UNION ALL Select 'E' UNION ALL Select 'C' UNION ALL Select 'E' INSERT INTO @Comm([Type],[Date]) Select 'C', '01/04/2010' UNION ALL Select 'C', '01/04/2010' UNION ALL Select 'C', '04/04/2010' UNION ALL Select 'C', '05/01/2010' UNION ALL Select 'C', '08/04/2009' UNION ALL Select 'C', '09/01/2009' UNION ALL Select 'M', '01/04/2010' UNION ALL Select 'M', '03/20/2010' UNION ALL Select 'M', '04/04/2010' UNION ALL Select 'M', '06/01/2010' UNION ALL Select 'M', '04/10/2009' UNION ALL Select 'M', '04/10/2009' INSERT INTO @PersonComm Select E.PersonID , Comm.[CommunicationId] FROM @Person E ,@Comm Comm Where E.[Type] = 'E' INSERT INTO @PersonComm Select E.PersonID , Comm.[CommunicationId] FROM @Person E ,@Comm Comm Where E.[Type] = 'C' Select EmployeeID, ClientID, Year, [JanuaryC] AS [Jan Calls], [JanuaryM] AS [Jan Meetings], [FebruaryC], [FebruaryM], [MarchC], [MarchM], [AprilC], [AprilM], [MayC], [MayM], [JuneC], [JuneM], [JulyC], [JulyM], [AugustC], [AugustM], [SeptemberC] , [SeptemberM], [OctoberC] , [OctoberM], [NovemberC], [NovemberM], [DecemberC], [DecemberM] FROM ( Select P.PersonId EmployeeID, Client.PersonId ClientID, YEAR(C.Date) Year, DateName(m,C.Date) Month, COUNT(*) Amount, C.Type CommType, DateName(m,C.Date) + C.Type PivotColumn -- JanuaryC FROM @Comm C INNER JOIN @PersonComm PC ON PC.CommunicationId = C.CommunicationId INNER JOIN @Person P ON P.PersonId = PC.PersonId INNER JOIN @PersonComm PCC ON PCC.CommunicationId = PC.CommunicationId INNER JOIN @Person Client ON Client.PersonId = PCC.PersonId AND Client.Type = 'C' Where P.Type = 'E' Group By P.PersonId, CLient.PersonId, YEAR(C.Date), DateName(m,C.Date), C.Type ) SourceTable PIVOT ( MAX(Amount) FOR PivotColumn IN ([JanuaryC], [JanuaryM],[FebruaryC], [FebruaryM],[MarchC], [MarchM], [AprilC], [AprilM], [MayC], [MayM], [JuneC], [JuneM], [JulyC], [JulyM], [AugustC], [AugustM],[SeptemberC] , [SeptemberM],[OctoberC] ,[OctoberM],[NovemberC], [NovemberM], [DecemberC], [DecemberM] ) )As PivotTable </code></pre>
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    1. POCount entries across three tables based on month in SQL or LINQ
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    1. USBen Dempsey
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