When it comes to SQL tasks, we are unable to run our similarity checkers over your candidates' solutions due to the innate similarity we expect between candidates. 

With SQL tasks, it is possible to have 20-50% of identical solutions just by pure coincidence due to the nature of the SQL language. 

If you have any questions about your candidate's solution, or would like to learn more, contact us at support@codility.com or read our anti-plagiarism process

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