kurs:group_by_beispiele
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kurs:group_by_beispiele [2013/10/21 13:05] mh |
kurs:group_by_beispiele [2014/05/20 15:24] mh |
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| + | <code> | ||
| + | with ym as ( | ||
| + | select employee_id, | ||
| + | -- extract(year from hire_date) y, | ||
| + | extract(month from hire_date) m | ||
| + | from employees | ||
| + | ) | ||
| + | select m, count(employee_id) | ||
| + | from ym | ||
| + | group by m | ||
| + | order by m | ||
| + | </code> | ||
| + | |||
| + | |||
| + | |||
| <code> | <code> | ||
| with gehaltklassen as ( | with gehaltklassen as ( | ||
kurs/group_by_beispiele.txt ยท Last modified: 2020/05/18 11:25 by admin
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