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in SQL by (3.3k points)

Just i have came across a SQL query in one of the stored procedure like below:

    account a, 
    performance p,
    customer c, 
    override o
    a.account_id = p.account_id (+)
    AND a.account_id = c.account_id (+)
    AND o.override_type(+) = 'O'

Can you please explain what is the (+) symbol's play here? and the difference of using Left side and right side.

1 Answer

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by (6.8k points)

This symbol refers to old syntax to implement outer join in oracle. But now it’s better to go with full outer, Left, or right join syntax provided by SQL.

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