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 String Comparison

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Mister Peanut
Starting Member

1 Post

Posted - 2006-07-12 : 18:39:14
I'm working with two SQL Server databases that both have a "description" column that contains a string of characters. The strings can be at least 500 words. I need to compare each string with all the others (there are about 115 rows in one database and 500 in the other) and determine how similar they are.

Is there a SQL command that takes both strings and returns a similarity percentage, (where 100% = the same, 0% = different)? If so, how can I use SQL Server to run each string through it automatically?

Thanks in advance!

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2006-07-12 : 18:41:11
Take a look at SOUNDEX and DIFFERENCE functions in SQL Server Books Online. Neither returns a percentage, but they might work for you.

Tara Kizer
aka tduggan
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