add: 2nd qna

FahimFBA · FahimFBA · commit b26dbc49dfea · 2024-06-29T00:52:18.000+06:00
diff --git a/584. Find Customer Referee/README.md b/584. Find Customer Referee/README.md
@@ -0,0 +1,8 @@
+# Solution
+
+```sql
+# Write your MySQL query statement below
+SELECT name FROM Customer WHERE referee_id != 2 or referee_id is NULL
+```
+
+![LeetCode](image.png)
diff --git a/584. Find Customer Referee/image.png b/584. Find Customer Referee/image.png
diff --git a/README.md b/README.md
@@ -2,6 +2,7 @@
 
 ## Question and Solution
 
-| Serial | Question | Solution |
-|--------|----------|----------|
-| 01     | [LeetCode](https://leetcode.com/problems/recyclable-and-low-fat-products/description/?envType=study-plan-v2&envId=top-sql-50) | [Solution](./1757.%20Recyclable%20and%20Low%20Fat%20Products/) |
+| Serial | Question                                                                                                                      | Solution                                                       |
+| ------ | ----------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------- |
+| 01     | [LeetCode](https://leetcode.com/problems/recyclable-and-low-fat-products/description/?envType=study-plan-v2&envId=top-sql-50) | [Solution](./1757.%20Recyclable%20and%20Low%20Fat%20Products/) |
+| 02     | [LeetCode](https://leetcode.com/problems/find-customer-referee/description/?envType=study-plan-v2&envId=top-sql-50)           | [Solution](./584.%20Find%20Customer%20Referee/)                |
