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--- kurs:sets_gruppenoperatoren [2012/10/04 11:20]
mh
+++ kurs:sets_gruppenoperatoren [2012/10/04 15:43]
mh
@@ Line 137: / Line 137: @@
 </code>
+<code>
+select status,
+       job_id,
+       first_name,
+       last_name,
+       coalesce(start_date,
+          (select max(end_date)+1
+            from job_history where employee_id = fe.employee_id),
+            hire_date) start_date,
+       end_date
+       from (
+SELECT 'H' status,
+       employees.employee_id,
+       JOB_HISTORY.job_id,
+       EMPLOYEES.FIRST_NAME,
+       EMPLOYEES.LAST_NAME,
+       hire_date,
+       start_date,
+       end_date
+FROM EMPLOYEES , JOB_HISTORY
+WHERE ( (EMPLOYEES.EMPLOYEE_ID = JOB_HISTORY.EMPLOYEE_ID) )
+union
+select 'A',
+       employees.employee_id,
+       job_id,
+       first_name,
+       last_name,
+       hire_date,
+       null,
+       null
+from employees
+) fe
+--where last_name = 'Kochhar'
+order by last_name, first_name, end_date
+</code>

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