SUPER EASY EXPLAINED THE REGEXP FUNCTION || HAVE A LOOK TO MASTER REGEXP
IntuitionApproachComplexity
Time complexity:

Space complexity:
CodeORDER BY user_id ASC;
-- ^starts the String
-- [a-zA-Z0-9_] matches the character before @
-
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```mysql []
# Write your MySQL query statement below
SELECT user_id , email from Users
where email 
REGEXP
'^[a-zA-Z0-9_]+@[a-zA-Z]+\\.com
```
ORDER BY user_id ASC;
-- ^starts the String
-- [a-zA-Z0-9_] matches the character before @
-- @ checks for 1 @
-- [a-zA-Z] matches character after @
-- \\. escapes the . character 
-- .com matches the end 
-- $ End of String
```
['MySQL']