Leetcode SQL 50 -- 1683. Invalid Tweets

Question

Table name: Tweets

Column Name	Type
tweet_id	int
content	varchar

tweet_id is the primary key (column with unique values) for this table.
This table contains all the tweets in a social media app.

Write a solution to find the IDs of the invalid tweets.
The tweet is invalid if the number of characters used in the content of the tweet is strictly greater than 15.
Return the result table in any order.

Explaination

To check the number of character, we can use the LENGTH(<string>) function.

If you use this function on numbers (e.g. int), it will turn it into string and return number of digits.

Solution

SELECT tweet_id FROM Tweets WHERE LENGTH(content)>15;

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