उन कर्मचारियों को खोजने के लिए प्रश्न जिन्होंने अपनी नौकरी की भूमिकाओं के संबंध में अपनी पात्र छुट्टी से अधिक लिया है

यह प्रत्येक उपयोगकर्ता को मिलेगा जो प्रत्येक प्रकार की छुट्टी के लिए छुट्टी की राशि को पार कर चुका है:

SQL Fiddle

Oracle 11g R2 स्कीमा सेटअप :

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;

क्वेरी 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

परिणाम :

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