1. Start with a letter. 2. Contain only letters, digits, underscore '_', period '.', or dash '-' before '@'. 3. Have the domain '@leetcode.com'. Return the result table in any order. Approach / ...
Write a query to format the `name` column so that: - Only the **first character** is uppercase. - All other characters are lowercase. Return the result table ordered by `user_id`. Approach / ...
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