试题详情
- 单项选择题The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query? SELECT * FROM HR; （）
A、You obtain the results retrieved from the public synonym HR created by the database administrator.
B、You obtain the results retrieved from the HR table that belongs to your schema.
C、You get an error message because you cannot retrieve from a table that has the same name as a public synonym.
D、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product.
E、You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.
- B
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