Left Outer join and an additional where clause

Question

I have a join on two tables defined as a left outer join so that all records are returned from the left hand table even if they don\'t have a record in the right hand table.

Answer 1

You just need to put the predicate into the JOIN condition. Putting it into the WHERE clause would effectively convert your query to an inner join.

For Example:

...
From a
Left Join b on a.id = b.id and b.condition = 'x'