WISE OWL EXERCISES
- Simple Queries (4)
- Setting criteria using WHERE (5)
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- Transactions (4)
- Creating tables (4)
- Temporary tables and table variables (9)
- Table-valued functions (6)
- Derived tables and CTEs (11)
- Dynamic SQL (4)
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- Triggers (2)
- Archived (70)
SQL | Archived exercise | Count how many people by status - vbls
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If you haven't already done so, run the stored procedure in the above folder to generate a database of training courses and delegates.
The tblPersonStatus table contains two rows as follows:
A person is either current or obsolete!
By linking the tblPerson table to this tblPersonStatus table, create a simple query to show the number of people who still work at their companies:
A suggestion for what the query could look like
By declaring and using two variables (called @NumberCurrent and @NumberObsolete, perhaps?) create a query to show how many people there are in the database for each of the two statuses (stati?) Current and Obsolete:
What the result of running your query should look like
Optionally, save this query as Count persons by status.sql, then close it down.