Overall Progress
0/ 100(0%)
Easy
0/ 35
Medium
0/ 40
Hard
0/ 25
100 problems
#1
Easy
Select All Employees
SELECTbasics
#2
Easy
Select Employee Names
SELECTcolumns
#3
Easy
Filter by Department
SELECTWHEREfiltering
#4
Easy
High Salary Employees
SELECTWHEREcomparison
#5
Easy
Count All Employees
COUNTaggregation
#6
Easy
Unique Departments
DISTINCTunique
#7
Easy
Order by Salary
ORDER BYsorting
#8
Easy
Limit Results
LIMITORDER BY
#9
Easy
Filter with AND
WHEREANDfiltering
#10
Easy
Filter with OR
WHEREORfiltering
#11
Easy
Using IN Clause
WHEREINfiltering
#12
Easy
Using LIKE Pattern
LIKEpattern matching
#13
Easy
Count by Department
COUNTGROUP BY
#14
Easy
Sum of Salaries
SUMGROUP BY
#15
Easy
Average Salary
AVGaggregation
#16
Easy
Min and Max Salary
MINMAXaggregation
#17
Easy
NULL Manager Check
NULLIS NULL
#18
Easy
Between Dates
BETWEENdates
#19
Easy
All Customers
SELECTbasics
#20
Easy
Products by Category
WHEREfiltering
| # | Status | Title | Difficulty |
|---|---|---|---|
| 1 | Select All Employees | Easy | |
| 2 | Select Employee Names | Easy | |
| 3 | Filter by Department | Easy | |
| 4 | High Salary Employees | Easy | |
| 5 | Count All Employees | Easy | |
| 6 | Unique Departments | Easy | |
| 7 | Order by Salary | Easy | |
| 8 | Limit Results | Easy | |
| 9 | Filter with AND | Easy | |
| 10 | Filter with OR | Easy | |
| 11 | Using IN Clause | Easy | |
| 12 | Using LIKE Pattern | Easy | |
| 13 | Count by Department | Easy | |
| 14 | Sum of Salaries | Easy | |
| 15 | Average Salary | Easy | |
| 16 | Min and Max Salary | Easy | |
| 17 | NULL Manager Check | Easy | |
| 18 | Between Dates | Easy | |
| 19 | All Customers | Easy | |
| 20 | Products by Category | Easy |
Showing 1 to 20 of 100