kurs:sets_gruppenoperatoren
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kurs:sets_gruppenoperatoren [2010/10/30 15:00] mh |
kurs:sets_gruppenoperatoren [2012/10/04 15:43] mh |
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| + | <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, start_date | ||
| + | </code> | ||
| + | |||
| <code> | <code> | ||
| select * from | select * from | ||
| Line 76: | Line 112: | ||
| where history.employee_id = employees.employee_id | where history.employee_id = employees.employee_id | ||
| </code> | </code> | ||
| + | |||
| + | <code> | ||
| + | with history_union_employees as | ||
| + | ( | ||
| + | SELECT 1 h, EMPLOYEES.FIRST_NAME, | ||
| + | EMPLOYEES.LAST_NAME, | ||
| + | JOB_HISTORY.START_DATE, | ||
| + | JOB_HISTORY.END_DATE, | ||
| + | JOB_HISTORY.JOB_ID | ||
| + | FROM JOB_HISTORY , EMPLOYEES | ||
| + | WHERE ( (EMPLOYEES.EMPLOYEE_ID = JOB_HISTORY.EMPLOYEE_ID) ) | ||
| + | union | ||
| + | select 2 h, EMPLOYEES.FIRST_NAME, | ||
| + | EMPLOYEES.LAST_NAME, | ||
| + | null, | ||
| + | null, | ||
| + | job_id | ||
| + | from employees where employee_id in (select employee_id from job_history) | ||
| + | ) | ||
| + | select first_name, last_name, start_date, end_date, job_title from | ||
| + | history_union_employees h join | ||
| + | jobs j on h.job_id = j.job_id | ||
| + | order by last_name, nvl(end_date,sysdate) | ||
| + | |||
| + | </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> | ||
| + | |||
kurs/sets_gruppenoperatoren.txt ยท Last modified: 2014/09/10 21:22 (external edit)
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