Easy and Simple Solution | 100% Faster Approach
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🔥 Approach
# Code
```mysql []
# Write your MySQL query statement below
SELECT tweet_id
FROM Tweets
WHERE CHAR_LENGTH(content)>15;
```
**If you found this solution helpful, please give it an upvote! 🌟✨ It really motivates me to share more solutions like this. 😊👍
Happy coding! 💻🐱‍🏍**
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# 🔥 Approach & Intuition

### Filtering Based on Content Length:
- We check if the `content` has more than 15 characters using `CHAR_LENGTH(content)`.
- `CHAR_LENGTH()` is preferred over `LENGTH()` because it counts characters, whereas `LENGTH()` counts bytes (important in multi-byte encodings).

### Query Execution:
- The database scans the `Tweets` table, applies the condition, and returns the `tweet_id` of invalid tweets.
- Since `tweet_id` is the **primary key**, retrieval is optimized.

---

## ⏳ Time & Space Complexity Analysis

### Time Complexity: **O(N)**
- The query applies `CHAR_LENGTH(content) > 15` as a filter.
- Since there is no index on the `content` column, the database performs a full table scan.
- For `N` rows in the `Tweets` table:
  - **Best Case (O(1))**: If the table is empty.
  - **Worst Case (O(N))**: When all rows must be scanned and checked.
  - **Average Case (O(N))**: The query runs in **linear time**, scanning each row once.

### Space Complexity: **O(1)**
- The query does not use any extra space apart from the result storage.
- The database engine processes data **in-place** without requiring additional memory.

['MySQL']