OCP认证071中文考试题库原题(cuug内部资料)第64题

时间：2022-06-02 来源：

本套题库是OCP考试中的071(中文版)试题，由CUUG整理，如有报考OCP认证意向，可以联系cuug咨询老师。

64、请选择两项。

查看COLORS表中的数据:

RGB_HEX_VALUE COLOR_NAME

------------------------- -----------------------

FF0000 red

00FF00 green

0000FF blue

查看BRICKS表中的数据:

BRICK_ID COLOR_RGB_HEX_VALUE

-------------- --------------------------------------

1 FF0000

2 00FF00

3 FFFFFF

哪两个查询返回COLORS中的所有行?

A) SELECT *

FROM colors c

LEFT JOIN bricks b

ON b.color_rgb_hex_value = c.rgb_hex_value

WHERE b.brick_id > 0;

B) SELECT *

FROM bricks b

RIGHT JOIN colors c

ON b.color_rgb_hex_value = c.rgb_hex_value;

C) SELECT *

FROM colors c

LEFT JOIN bricks b

USING (rgb_hex_value) ;

D) SELECT *

FROM bricks b

JOIN colors c

ON b.co1or_rgb_hex_value = c.rgb_hex_value;

E)SELECT *

FROM bricks b

FULL JOIN colors c

ON b.color_rgb_hex_value = c.rgb_hex_value;

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