SQL Challenge: Capitalize First Letters

Convert the first letter of each word found in content_text to uppercase, while keeping the rest of the letters lowercase. Your output should include the original text in one column and the modified text in another column.

Let’s dive into a challenging interview question straight from Cisco Systems. This problem will test your ability to manipulate strings and think critically under pressure. Perfect practice for standing out in your next big interview!

Approach Hints:

Here are some technical insights to guide you toward solving this question.

String Formatting

• Use lower() to convert all letters in content_text to lowercase first. This ensures a consistent baseline.

Capitalizing First Letters

• Apply initcap() to make the first letter of each word uppercase.

Regex Replace:

• Utilize regexp_replace() to correct instances where consecutive uppercase letters appear.
• Pattern (\w)([A-Z]+) identifies the first letter of a word followed by multiple uppercase letters.

Replacement \1\L\2 keeps the first letter uppercase and converts the rest to lowercase

Output:

• Display the original and modified text in separate columns for a clear comparison.

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