题目内容
(请给出正确答案)
[单选题]
在SQL语言的SELECT语句中,实现投影操作的是哪个语句? ()
A.SELECT
B.FROM
C.WHERE
D.GROUP BY
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A.SELECT
B.FROM
C.WHERE
D.GROUP BY
A.SELECT
B.FROM
C.WHERE
D.GROUPBY
A.SELECT
B.FROM
C.WHERE
D.GROUP BY
A) SELECT
B) FROM
C) WHERE
D) ORDER BY
A.SELECT
B.FROM
C.WHERE
D.ORDER BY
A.FOR
B.IF
C.WHILE
D.WHERE
A.FOR
B.IF
C.WHILE
D.WHERE