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Calculate Similarity Between two columns

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Last Modified: 2013-11-30
I have one table,

CREATE TABLE Wrongly_Merged_Alerts_test
(
SSN nvarchar(255) NULL,
SRCSSN nvarchar(255) NULL
)

These are social security numbers.  I need something that will compare these two fields and output a column with a similarity score.  I am open to excel solutions as well.  I know there is a way to do this in analysis services or integration services.

Thanks in advance.
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ValentinoVBI Consultant
CERTIFIED EXPERT
Most Valuable Expert 2011

Commented:
Not sure if I fully understood your question, do you already know how to do it in Integration Services?  If not, and if that's what you're looking for: in Integration Services you can use the Fuzzy Grouping transformation in the Data Flow.  It has the option to add an extra output column with the similarity score (a number between 0 and 1).
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To use it:

select SSN, SrcSSN, ee_similarity(SSN, SrcSSN) as SimPercent
From Wrongly_Merged_Alerts_test

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