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Question 585 - COF-C02 discussion

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Which function returns an integer between 0 and 100 when used to calculate the similarity of two strings?

A.
APPROXIMATE_SIMILARITY
Answers
A.
APPROXIMATE_SIMILARITY
B.
JAROWINKLER_SIMILARITY
Answers
B.
JAROWINKLER_SIMILARITY
C.
APPROXIMATE_JACCARD_INDEX
Answers
C.
APPROXIMATE_JACCARD_INDEX
D.
MINHASH COMBINE
Answers
D.
MINHASH COMBINE
Suggested answer: B

Explanation:

The JAROWINKLER_SIMILARITY function in Snowflake returns an integer between 0 and 100, indicating the similarity of two strings based on the Jaro-Winkler similarity algorithm. This function is useful for comparing strings and determining how closely they match each other.

Understanding JAROWINKLER_SIMILARITY: The Jaro-Winkler similarity metric is a measure of similarity between two strings. The score is a number between 0 and 100, where 100 indicates an exact match and lower scores indicate less similarity.

Usage Example: To compare two strings and get their similarity score, you can use:

SELECT JAROWINKLER_SIMILARITY('string1', 'string2') AS similarity_score;

Application Scenarios: This function is particularly useful in data cleaning, matching, and deduplication tasks where you need to identify similar but not identical strings, such as names, addresses, or product titles.

asked 23/09/2024
Rob Versteeg
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