试题
| 选 择 题 |
1 |
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6 |
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9 |
10 |
| 您的答案 |
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| 正确答案 |
A |
D |
D |
C |
D |
B |
C |
C |
C |
D |
| 选 择 题 |
11 |
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20 |
| 您的答案 |
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| 正确答案 |
B |
D |
B |
A |
C |
C |
A |
B |
D |
B |
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21 |
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25 |
26 |
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28 |
29 |
30 |
| 您的答案 |
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| 正确答案 |
C |
C |
B |
A |
C |
D |
B |
A |
A |
C |
| 选 择 题 |
31 |
32 |
33 |
34 |
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36 |
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38 |
39 |
40 |
| 您的答案 |
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| 正确答案 |
C |
B |
D |
D |
A |
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| 填 空 题 |
1 |
2 |
3 |
4 |
5 |
| 您的答案 |
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| 正确答案 |
数据源 |
INSERT INTO R(NO,NAME,CLASS) VALUES(30,"郑和","95031") |
文件位置 |
内部联接 |
Union |
| 填 空 题 |
6 |
7 |
8 |
9 |
10 |
| 您的答案 |
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| 正确答案 |
字符 |
逻辑表达式 |
SELECT * FROM R UNION SELECT * FROM T |
DELETE FROM R WHERE NO=20 |
区域 |
| 填 空 题 |
11 |
12 |
13 |
14 |
15 |
| 您的答案 |
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| 正确答案 |
单价 BETWEEN 15 AND 25 |
分类号 |
IN |
借书证号 |
COUNT(*)=1 |
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