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SQL | Archived exercise | Count how many people by status - vbls
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You can learn how to do this exercise on the relevant Wise Owl classroom training course (sadly for the moment only in the UK).
| Software ==> | SQL (198 exercises) |
| Version ==> | Any version of SQL Server |
| Topic ==> | Archived (70 exercises) |
| Level ==> | Average difficulty |
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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.