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Difference between data table join.

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Difference between data table join.

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Hello All,


I have some confusion on table joins. Please refer below example.

I have two data tables.


PER_ALL_ASSIGNMENTS_M PM,

PER_ALL_PEOPLE_F PF

where 

PM.PERSON_ID = PF.PERSON_ID

PM.PERSON_ID = PF.PERSON_ID(+)

PM.PERSON_ID(+) = PF.PERSON_ID

Can some one tell me what is difference between those three in where clause, and which one we will used mostly. Please explain briefly. 


From my knowledge those are left join and right join.


Thanks,

Malak.


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