使用SQL语句进行查询操作时,若希望查询出全部存在的元组,一般使用的保留字是
A.Unique
B.Except
C.Distinct
D.All
正确答案是D
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Complete the following sentence with a (compound) word derived from the one given in bracket.
Someone who is( )always tries to do what they want, even though other people may advise them not to. (strong, will)