The following should show all recognition defaults where the recognition type is null/blank.
 
SELECT  
csource.keyname AS 'SourceConstit', 
crecip.keyname AS 'RecipientConstit',
* 
FROM dbo.REVENUERECOGNITIONDEFAULT rd
JOIN dbo.CONSTITUENT csource ON csource.ID = rd.SOURCECONSTITUENTID
JOIN dbo.CONSTITUENT crecip ON crecip.id = rd.RECIPIENTCONSTITUENTID
WHERE rd.REVENUERECOGNITIONTYPECODEID is null


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