ase when b.G5_TYPE is not null then b.G5_TYPE='1' else '/' end as if_5g
时间: 2024-04-13 08:29:42 浏览: 16
您好!对于您的问题,您可以使用以下代码来实现:
```
CASE
WHEN b.G5_TYPE IS NOT NULL THEN '1'
ELSE '/'
END AS if_5g
```
这段代码基于条件 `b.G5_TYPE is not null` ,如果条件成立,则将 `b.G5_TYPE` 的值设置为 `'1'`,否则设置为 `'/'`。最后,将结果赋值给别名 `if_5g`。
请注意,这只是一个示例,具体的实现可能因您的具体需求而有所不同。如果您有其他问题,请随时提问!
相关问题
ModelSim executable not found in C:/intelFPGA/18.1/modelsim_ase/ Error.
The error message indicates that the ModelSim executable file cannot be found in the specified directory. This can occur due to a variety of reasons, such as incorrect installation or configuration settings.
Here are some possible solutions:
1. Check if the directory path is correct and make sure that ModelSim is installed in the specified directory.
2. Ensure that the environment variables for ModelSim are set correctly. To do this, go to Control Panel -> System -> Advanced System Settings -> Environment Variables and add the path to the ModelSim executable to the PATH variable.
3. Try reinstalling ModelSim and make sure to follow the installation instructions carefully.
4. If you are using a 64-bit operating system, make sure that you have installed the 64-bit version of ModelSim.
If none of these solutions work, you may need to contact Intel FPGA support for further assistance.
ImportError: cannot import name 'crystal' from 'ase.geometry' (/export/home/anliying/.local/lib/python3.8/site-packages/ase-3.22.1-py3.8.egg/ase/geometry/__init__.py)
由于ASE库版本更新,ASE现在已经没有crystal模块了。如果您需要使用ASE的晶体结构生成功能,可以使用ase.build模块中的相关函数,比如make_supercell、bulk和molecule。这些函数可以方便地生成晶体结构、分子结构和超胞结构。
下面是一个使用ASE的make_supercell函数生成超胞的示例代码:
```python
from ase.io import read
from ase.build import make_supercell
# 加载POSCAR文件
structure = read('POSCAR')
# 生成2x2x2的超胞
supercell = make_supercell(structure, [2, 2, 2])
# 输出超胞的原子数和晶格参数
print('Number of Atoms in Supercell: ', len(supercell))
print('Lattice Parameters of Supercell: ', supercell.get_cell_lengths_and_angles())
```
该代码使用ASE的make_supercell函数生成2x2x2的超胞,并输出超胞的原子数和晶格参数。根据超胞的大小和晶格参数,您可以确定原子的分布情况。如果超胞较小且晶格参数不变,则原子的分布比较均匀。如果超胞较大或晶格参数发生变化,则原子的分布可能会受到影响。
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