Is it ok to check for SQL returning a Soundex of 0000 based on the assumption that it isn’t a valid word, e.g. has digits, spaces, special characters or is there a better way to do this?
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Is it ok to check for SQL returning a Soundex of 0000 based on the assumption that it isn’t a valid word, e.g. has digits, spaces, special characters or is there a better way to do this?
I don’t think soundex is good for that, I think the SOUNDEX() function will omit the digits, spaces and symbol, for example:
Both give you the same result.
Besides SOUNDEX() has some limitation in the way it works.
You can take a look at the Levenshtein distance, it determines the number of operations you have to do to make one string exactly like another. You can find an implementation here.
HTH