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kurs:sets_gruppenoperatoren [2008/10/23 12:25] 127.0.0.1 external edit |
kurs:sets_gruppenoperatoren [2012/09/25 17:22] 127.0.0.1 external edit |
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+ | <code> | ||
+ | select * from | ||
+ | ( | ||
+ | select employee_id, FIRST_NAME, EMPLOYEES.LAST_NAME from employees | ||
+ | minus | ||
+ | |||
+ | SELECT JOB_HISTORY.EMPLOYEE_ID id, EMPLOYEES.FIRST_NAME fn, EMPLOYEES.LAST_NAME ln | ||
+ | FROM JOB_HISTORY , EMPLOYEES | ||
+ | WHERE ( (EMPLOYEES.EMPLOYEE_ID = JOB_HISTORY.EMPLOYEE_ID) ) | ||
+ | ) | ||
+ | --where id = 101 | ||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
+ | select * from ( | ||
+ | SELECT 0 sb, 'history', start_date, end_date, JOB_HISTORY.EMPLOYEE_ID id, EMPLOYEES.FIRST_NAME fn, EMPLOYEES.LAST_NAME ln, JOB_HISTORY.JOB_ID jid | ||
+ | FROM JOB_HISTORY , EMPLOYEES | ||
+ | WHERE (EMPLOYEES.EMPLOYEE_ID = JOB_HISTORY.EMPLOYEE_ID) | ||
+ | and JOB_HISTORY.EMPLOYEE_ID = :b_eid | ||
+ | union | ||
+ | select 1 sb, 'jetzt', null, sysdate, employee_id, FIRST_NAME, EMPLOYEES.LAST_NAME, JOB_ID from employees | ||
+ | where employee_id = :b_eid | ||
+ | ) order by sb, end_date | ||
+ | |||
+ | |||
+ | select sb, h, start_date, end_date, id, fn, ln, jid, prior jid from ( | ||
+ | SELECT 0 sb, 'history' h, start_date, end_date, JOB_HISTORY.EMPLOYEE_ID id, EMPLOYEES.FIRST_NAME fn, EMPLOYEES.LAST_NAME ln, JOB_HISTORY.JOB_ID jid | ||
+ | FROM JOB_HISTORY , EMPLOYEES | ||
+ | WHERE (EMPLOYEES.EMPLOYEE_ID = JOB_HISTORY.EMPLOYEE_ID) | ||
+ | and JOB_HISTORY.EMPLOYEE_ID = 101 | ||
+ | union | ||
+ | select 1 sb, 'jetzt', null, sysdate, employee_id, FIRST_NAME, EMPLOYEES.LAST_NAME, JOB_ID from employees | ||
+ | where employee_id = 101 | ||
+ | ) connect by PRIOR employee_id | ||
+ | by sb, end_date | ||
+ | </code> | ||
+ | |||
+ | <code> | ||
+ | select employee_id as id, job_id, last_name, to_date(sysdate) from employees | ||
+ | union | ||
+ | select employee_id, job_id, to_char(null), to_date(end_date) from job_history | ||
+ | order by 1,3,4 desc | ||
+ | </code> | ||
+ | |||
+ | <code> | ||
+ | select first_name, last_name from employees where employee_id in | ||
+ | ( | ||
+ | select employee_id | ||
+ | from employees | ||
+ | where job_id = 'IT_PROG' | ||
+ | union | ||
+ | select employee_id | ||
+ | from job_history | ||
+ | where job_id = 'IT_PROG' | ||
+ | ) | ||
+ | ------ | ||
+ | |||
+ | select first_name, last_name, stand, datum from employees, | ||
+ | ( | ||
+ | select employee_id, | ||
+ | job_id, | ||
+ | 'jetzt' stand, | ||
+ | sysdate datum | ||
+ | from employees | ||
+ | where job_id = 'IT_PROG' | ||
+ | union | ||
+ | select employee_id, | ||
+ | job_id, | ||
+ | 'früher' stand, | ||
+ | end_date datum | ||
+ | from job_history | ||
+ | where job_id = 'IT_PROG' | ||
+ | ) history | ||
+ | where history.employee_id = employees.employee_id | ||
+ | </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> |