SQL
Text Similarity Functions
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|   |   |
|:--|:--------|
| **Description** |Alias for `hamming(s1, s2)`. The number of positions with different characters for two strings of equal length. Strings must be of equal length. Characters of different cases (e.g., `a` and `A`) are considered different. |
| **Example** | `mismatches('duck', 'luck')` |
| **Result** | `1` |