Election:
EID PID PlanCode Coverage
2 49791 DELTA FAMILY
2 49791 LIGNA FAMILY
2 49791 BSP FAMILY
2 49792 BSP FAMILY
2 49792 LIGNA FAMILY
2 49792 DELTA FAMILY
2 49793 LIGNA FAMILY
relationship Table:
EID PID
2 49791
2 49792
2 49793
table Desc:
Relationship: Employee has 3 dependents
Election:For each Pid, an employee chooses a particular Plan
Problem:
As Pid:49793 enroll in LigNa plan only, trying to add 2 rows for remaining plan ie delta,BSP row
Can we do it as plan name is not fixed, but we know of dependents in relationship table?
Please suggest..
PS: Its working now using cross Join
If am not wrong you are trying to insert the missing PlanCode
for each EID,PID
combination. Am not very sure about the link of LEFT JOIN
usage with this question unless I missed something
INSERT INTO Election
(EID,PID,PlanCode,Coverage)
SELECT A.EID,A.PID,B.PlanCode,A.Coverage
FROM (SELECT DISTINCT EID,PID,Coverage
FROM Election) A
CROSS JOIN (SELECT DISTINCT PlanCode
FROM Election) B
WHERE NOT EXISTS (SELECT 1
FROM Election C
WHERE A.EID = C.EID
AND A.PID = C.PID
AND B.PlanCode = C.PlanCode)
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