| # | Problem | Level | Status |
|---|---|---|---|
| 1821 | Find Customers With Positive Revenue this Year | Easy | Solved |
| 183 | Customers Who Never Order | Easy | Solved |
| 1873 | Calculate Special Bonus | Easy | Solved |
| 1398 | Customers Who Bought Products A and B but Not C | Medium | Solved |
| 1112 | Highest Grade For Each Student | Medium | Solved |
| # | Problem | Level | Status |
|---|---|---|---|
| 0175 | Combine Two Tables | Easy | Solved |
| 1067 | Product Sales Analysis I | Easy | Solved |
| 1407 | Top Travellers | Easy | Solved |
| 0607 | Sales Person | Easy | Solved |
| 1440 | Evaluate Boolean Expression | Medium | Solved |
| 1212 | Team Scores in Football Tournament | Medium | Solved |
| # | Problem | Level | Status |
|---|---|---|---|
| 1890 | The Latest Login in 2020 | Easy | Solved |
| 0511 | Game Play Analysis I | Easy | Solved |
| 1571 | Warehouse Manager | Easy | Solved |
| 0586 | Customer Placing the Largest Number of Orders | Easy | Solved |
| 1741 | Find Total Time Spent by Each Employee | Easy | Solved |
| 1173 | Immediate Food Delivery I | Easy | Solved |
| 1445 | Apples & Oranges | Medium | Solved |
| 1699 | Number of Calls Between Two Persons | Medium | Solved |
| # | Problem | Level | Status |
|---|---|---|---|
| 1587 | Bank Account Summary II | Easy | Solved |
| 0182 | Duplicate Emails | Easy | - |
| 1050 | Customer Order Frequency | Easy | - |
| 1511 | Customer Order Frequency | Easy | - |
| 1693 | Daily Leads and Partners | Easy | - |
| 1495 | Friendly Movies Streamed Last Month | Easy | - |
| 1501 | Countries You Can Safely Invest In | Medium | - |
| # | Problem | Level | Status |
|---|---|---|---|
| 0603 | Consecutive Available Seats | Easy | - |
| 1795 | Rearrange Products Table | Easy | - |
| 0613 | Shortest Distance in a Line | Easy | - |
| 1965 | Employees With Missing Information | Easy | - |
| 1264 | Page Recommendations | Medium | - |
| 0608 | Tree Node | Medium | - |
| 0534 | Game Play Analysis III | Medium | - |
| 1783 | Grand Slam Titles | Medium | - |
| 1747 | Leetflex Banned Accounts | Medium | - |
| # | Problem | Level | Status |
|---|---|---|---|
| 1350 | Students With Invalid Departments | Easy | - |
| 1303 | Find the Team Size | Easy | - |
| 0512 | Game Play Analysis II | Easy | - |
| 0184 | Department Highest Salary | Medium | - |
| 1549 | The Most Recent Orders for Each Product | Medium | - |
| 1532 | The Most Recent Three Orders | Medium | - |
| 1831 | Maximum Transaction Each Day | Medium | - |
| # | Problem | Level | Status |
|---|---|---|---|
| 1077 | Project Employees III | Medium | - |
| 1285 | Find the Start and End Number of Continuous Ranges | Medium | - |
| 1596 | The Most Frequently Ordered Products for Each Customer | Medium | *** |
| 1709 | Biggest Window Between Visits | Medium | *** |
| 1270 | All People Report to the Given Manager | Medium | *** |
| 1412 | Find the Quiet Students in All Exams | Hard | *** |
| 1767 | Find the Subtasks That Did Not Execute | Hard | *** |
| 1225 | Report Contiguous Dates | Hard | *** |