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Last week I was surprised to find out that sybase 12 doesn’t support full outer joins.
But it occurred to me that a full outer join should be the same as a left outer join unioned with a right outer join of the same sql.
Can anybody think of a reason this would not hold true?
UNION-ing twoOUTER JOINstatements should result in duplicate rows representing the data you’d get from anINNER JOIN. You’d have to probably do aSELECT DISTINCTon the data set produced by theUNION. Generally if you have to use aSELECT DISTINCTthat means it’s not a well-designed query (or so I’ve heard).