我有表名= schedule
如何选择只有一个字段和所有其他字段值重复的记录?
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| course_id | room | day | time |
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| 2 | 401 |saturday| 9:00 - 13:00 |
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| 3 | 401 | sunday | 9:00 - 13:00 |
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| 2 | 402 | monday | 9:00 - 13:00 |
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| 3 | 403 | tuesday| 14:00 - 17:00|
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| 4 | 401 | tuesday| 9:00 - 13:00 |
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| 2 | 402 |wednesday|14:00 - 17:00|
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和另一个表名=当然
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| id | course_code | course_name |
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| 2 | cse | cse |
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| 3 | eee | eee |
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| 4 | ct | ct |
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现在如何让输出这样的..
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| course code | course name | info |
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|cse | cse |401,satueday-9:00-13:00; 402,monday-9:00-13:00; 402,wednesday-14:00-17:00|
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| eee | eee | 401,sunday-9:00-13:00;403,tuesday-14:00-17:00 |
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| ct | ct | 401,tuesday-9:00-13:00|
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我不知道如何使表堆栈溢出?由于这个原因,我的表结构不好.. –
php Myadmin数据库。 –
查询[** HERE **](https://webapps.stackexchange.com/questions/6700/is-there-a-webapp-to-create-ascii-art-tables)表格格式 –