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alter table table_name change column old_col_name rename to new_col_name;
ALTER TABLE table_name CHANGE COLUMN old_col_name new_col_name column_type COMMENT '';
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Hi there,
even though I'm able to login to calibre web using the web browser on my tolino, I can't download epubs. I receive the error message that the book is corrupted... of course it is not.
Any…
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是否支持使用SQL方式进行分页操作?
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请问是否可以用dataframe 执行sql 返回result 为df类型?
例如: DataFrame(o.execute_sql('sql query')),
如果可以是否有示例代码,或者有其他办法
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tensorboard fails to draw graph with error.
training and log is okay, im pretty sure this is tensorboard's bug.
web logs:
```
[Deprecation] Styling master document from stylesheets defined in HTML…
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关于ODPS中mapreduce的使用,我这边有两个疑问。
1. 如果map的输出中Key有多个列c1, c2, c3. 如果仅指定c1为group columns。那么假设map生成了两个数据(k1, v1), (k2, v2)。其中k1.c1 = k2.c1。 那最终reduce函数接收到的Key的内容为k1还是k2呢?
2. 示例类com.aliyun.odps.mapred.open…
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I would suggest that people who give talks or presentations only upload one file. For example only a pdf or a opd file. In my opinion it is not necessary to upload more and different files, since it p…
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初始化时(示例代码如下),`endpoint`是什么意思?如果可能,能否给出详细的解释,谢谢!
```python
from odps import ODPS
o = ODPS('**your-access-id**', '**your-secret-access-key**', '**your-default-project**',
endpoint='**y…
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同一个程序在linux上运行正常,但在win10上经常在这出现异常
record = table.new_record([。。。。])
writer.write(record)
Traceback (most recent call last):
File ".\test_aliyun_mc.py", line 71, in
UploadData()
File "…
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我有个odps 中的字段string中存放是BINARY类型(从mysql同步的)
在使用open_record_reader 中获取数据报错
```
with download_session.open_record_reader(0,download_session.count) as reader:
for record in reade…