logo - 刷刷题
下载APP
【单选题】

Sandwich was an Englishman. He lived in the 18th century. Sandwich was rich, but he liked to play cards for money. He often played for twenty-four hours, and didn’t even stop to have his meals. He ordered (命令) his servants (仆人) to bring him some meat and bread. He put the meat between the two pieces of bread and held the food in his left hand while he played cards with his right hand. People liked Sandwich’s idea, and from then on they ate bread and meat as Sandwich did.
From the name of the man, Sandwich, we have the word of the food "sandwich" today.
People began to eat the food "sandwich" from ______.

A.
today
B.
the eighth century
C.
America
题目标签:命令
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】P5.下列关于SQL命令的叙述中,正确的是()。

A.
DELETE命令不能与 GROUP BY关键字一起使用
B.
SELECT命令不能与 GROUP BY关键字一起使用
C.
INSERT命令与 GROUP BY关键字一起使用可以按分组将新记录插入到表中
D.
UPDATE命令与 GROUP BY关键字一起使用可以按分组更新表中原有的记录

【单选题】删除视图myview的命令是______。

A.
DELETE myview
B.
DELETE VIEW myview
C.
DROP VIEW myview
D.
REMOVE VIEW myview