WISE OWL EXERCISES
SQL EXERCISES
SQL EXERCISES
- Simple Queries (4)
- Setting criteria using WHERE (5)
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- Calculations using dates (4)
- Basic joins (8)
- More exotic joins (2)
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- Subqueries (3)
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- Testing conditions (1)
- Looping (3)
- Scalar functions (6)
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- Temporary tables and table variables (9)
- Table-valued functions (6)
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SQL exercises on SUBQUERIES
This page lists the 3 exercises about Subqueries in SQL on our website:
| Software: | SQL |
| Version: | Any version of SQL Server |
| Topic: | Subqueries |
| Level: | Relatively easy |
| Course: | Introduction to SQL |
| Exercise: | Use a subquery to show events which happened since the last one for a particular country occurred. |
| Software: | SQL |
| Version: | Any version of SQL Server |
| Topic: | Subqueries |
| Level: | Average difficulty |
| Course: | Introduction to SQL |
| Exercise: | Create a correlated subquery to list out all countries having more than 8 events. |
| Software: | SQL |
| Version: | Any version of SQL Server |
| Topic: | Subqueries |
| Level: | Harder than average |
| Course: | Introduction to SQL |
| Exercise: | Use two subqueries to list all events in neither the last 30 countries or the last 15 categories. |
You can search our full list of SQL exercises here, or why not have a look at our other SQL training resources?
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