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1. Is it true to say that a Full Outer Join will always return the same amount of rows as either a Left or Right Outer Join?

2. Would a Full Outer to be used in situations where you didn't know (nor care) which of the two tables had the more rows? where instead you need all matching and non-matching rows regardless?

3. Or do Full Outer's make more sense when you have to outer join multiple tables(more than two)?
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PIEBALDconsult 6-Mar-14 22:15pm    
no yes no

There is a good example here[^]. It should help.
 
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