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In which case would you use a FULL OUTER JOIN?（）
A:Both tables have NULL values.
B:You want all unmatched data from one table.
C:You want all matched data from both tables.
D:You want all unmatched data from both tables.
E:One of the tables has more data than the other.
F:You want all matched and unmatched data from only one table.

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出自：Oracle认证

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