Zoekopdracht om werknemers te vinden die meer dan hun in aanmerking komende verlof hebben opgenomen met betrekking tot hun functierollen

Hiermee wordt elke gebruiker gevonden die het verlofbedrag voor elk type verlof heeft overschreden:

SQL Fiddle

Oracle 11g R2 Schema-instellingen :

CREATE TABLE Employee24( EMPLOYEEID, JOBROLES ) AS
SELECT 1, 'RoleA' FROM DUAL UNION ALL
SELECT 2, 'RoleB' FROM DUAL UNION ALL
SELECT 3, 'RoleB' FROM DUAL;

CREATE TABLE Leave25( EMPLOYEEID,LEAVEID, LEAVETYPE, STARTDATE, ENDDATE) AS
SELECT 1,1,'SickLeave',  DATE '2018-01-01', DATE '2018-01-11' FROM DUAL UNION ALL
SELECT 1,2,'SickLeave',  DATE '2018-01-21', DATE '2018-01-31' FROM DUAL UNION ALL
SELECT 1,3,'EarnedLeave',DATE '2018-01-11', DATE '2018-01-21' FROM DUAL UNION ALL
SELECT 1,4,'EarnedLeave',DATE '2018-02-01', DATE '2018-02-11' FROM DUAL UNION ALL
SELECT 1,5,'EarnedLeave',DATE '2018-02-21', DATE '2018-03-03' FROM DUAL UNION ALL
SELECT 2,6,'EarnedLeave',DATE '2018-02-01', DATE '2018-02-13' FROM DUAL UNION ALL
SELECT 3,7,'SickLeave',  DATE '2018-01-01', DATE '2018-01-09' FROM DUAL;


CREATE TABLE JOBROLESELIGIBLELE(JOBROLES, ELIGIBLE_SICK_LEAVES, ELIGIBLE_EARNED_LEAVES) AS
SELECT 'RoleA', 14, 24 FROM DUAL UNION ALL
SELECT 'RoleB',  7, 10 FROM DUAL;

Query 1 :

SELECT e.employeeId,
       l.leavetype,
       l.days_leave,
       r.AllowedLeaveAmount
FROM   Employee24 e
       INNER JOIN
       ( SELECT employeeId,
                SUM( enddate - startdate ) AS days_leave,
                leavetype
         FROM   Leave25
         GROUP BY employeeId, leaveType
       ) l
       ON ( e.employeeId = l.employeeId )
       INNER JOIN
       ( SELECT *
         FROM   JobRolesEligibleLE
         UNPIVOT ( AllowedLeaveAmount FOR LeaveType IN (
           Eligible_Sick_Leaves   AS 'SickLeave',
           Eligible_Earned_Leaves AS 'EarnedLeave'
         ) )
       ) r
       ON (    l.leavetype = r.leavetype
           AND e.jobroles   = r.jobroles )
WHERE  l.days_leave > r.AllowedLeaveAmount

Resultaten :

| EMPLOYEEID |   LEAVETYPE | DAYS_LEAVE | ALLOWEDLEAVEAMOUNT |
|------------|-------------|------------|--------------------|
|          1 |   SickLeave |         20 |                 14 |
|          1 | EarnedLeave |         30 |                 24 |
|          2 | EarnedLeave |         12 |                 10 |
|          3 |   SickLeave |          8 |                  7 |