OCP-1Z0-051 補充題庫 第18題 DELETE語句的特性
DELETE FROM sales;
There are no other uncommitted transactions on the SALES table.
Which statement is true about the DELETE statement?
A. It removes all the rows as well as the structure of the table
B. It removes all the rows in the table and deleted rows cannot be rolled back
C. It removes all the rows in the table and deleted rows can be rolled back
D. It would not remove the rows if the table has a primary key
答案: C
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