kurs:corellated_subquery_vs_pseudotable
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kurs:corellated_subquery_vs_pseudotable [2012/12/18 10:24] mh |
kurs:corellated_subquery_vs_pseudotable [2014/09/10 21:22] (current) |
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| </code> | </code> | ||
| + | |||
| + | ==== den Angestellten mit der niedrigsten id und gleichem Nachnamen ==== | ||
| + | |||
| + | <code> | ||
| + | select employee_id, | ||
| + | last_name | ||
| + | from employees e | ||
| + | where employee_id = | ||
| + | (select min(employee_id) from employees where last_name = e.last_name) | ||
| + | order by employee_id; | ||
| + | </code> | ||
kurs/corellated_subquery_vs_pseudotable.txt ยท Last modified: 2014/09/10 21:22 (external edit)
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