when it comes to中to的词性
时间: 2024-05-22 17:15:34 浏览: 16
中 (zhōng) can function as a preposition or an adverb in Chinese grammar.
As a preposition, 中 (zhōng) is often used to indicate "in" or "inside," as in 中心 (zhōngxīn) "center" or 中午 (zhōngwǔ) "noon."
As an adverb, 中 (zhōng) can have several meanings depending on the context. It can mean "moderately" or "somewhat," as in 中等 (zhōngděng) "medium" or 中规中矩 (zhōngguīzhòngjǔ) "conventional." It can also mean "in the middle" or "in between," as in 中间 (zhōngjiān) "middle" or 中途 (zhōngtú) "halfway." Finally, it can mean "among" or "amidst," as in 中文 (zhōngwén) "Chinese language" or 中美洲 (zhōngměizhōu) "Central America."
相关问题
case when后面加to_char
`CASE WHEN` 是一个条件语句,用于根据条件返回不同的结果。`TO_CHAR` 是将数据类型转换为字符类型的函数。当在 `CASE WHEN` 语句中需要返回字符类型的结果时,可以在 `THEN` 子句中使用 `TO_CHAR` 函数来将其转换为字符类型。例如:
```
SELECT CASE WHEN score >= 90 THEN '优秀'
WHEN score >= 80 THEN '良好'
WHEN score >= 60 THEN '及格'
ELSE '不及格'
END AS grade
FROM student;
```
如果需要将分数以字符类型的形式显示,可以使用 `TO_CHAR` 函数,例如:
```
SELECT CASE WHEN score >= 90 THEN '优秀'
WHEN score >= 80 THEN '良好'
WHEN score >= 60 THEN '及格'
ELSE '不及格'
END AS grade,
TO_CHAR(score, '999') AS score_str
FROM student;
```
这样可以将分数转换为字符串,并且指定了格式化模板 `'999'`,表示输出的字符串宽度为 3,不足 3 位的数字前面会补空格。
jupyter notebook中unable to share contexts
"Unable to share contexts" is a common error message that can occur when using Jupyter Notebook. This error typically occurs when you are using a Python kernel that is not compatible with the version of Jupyter Notebook you are running.
One solution to this problem is to make sure that the Python kernel you are using matches the version of Jupyter Notebook you have installed. You can do this by creating a new virtual environment and installing the correct version of Jupyter Notebook and the required dependencies.
Another solution is to try installing the jupyter_client package using pip. This package provides the ability to share contexts between Jupyter Notebook sessions and can help to resolve the "unable to share contexts" error.
Finally, you can also try restarting the kernel and clearing the output cells in your Jupyter Notebook to see if this resolves the issue.
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