大约有 47,000 项符合查询结果（耗时：0.0513秒） [XML]
How do you check if a certain index exists in a table?
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You can do it using a straight forward select like this:
SELECT *
FROM sys.indexes
WHERE name='YourIndexName' AND object_id = OBJECT_ID('Schema.YourTableName')
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How can I set the default timezone in node.js?
... but their data format is hard to work with. I find it much easier to work from en.wikipedia.org/wiki/List_of_tz_database_time_zones, which is built from the IANA dataset (currently the 2017c version).
– Peter Rust
Apr 25 '18 at 17:44
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Install gitk on Mac
...blem and solved it as follows:
Download the official git package for Mac from http://git-scm.com/download/mac
Install the package. This places all the binaries in /usr/local/git/bin.
Optionally run the included script to make gitk accessible outside of terminals
Either add /usr/local/git/bin to yo...
Extract public/private key from PKCS12 file for later use in SSH-PK-Authentication
I want to extract the public and private key from my PKCS#12 file for later use in SSH-Public-Key-Authentication.
7 Answ...
How do I find numeric columns in Pandas?
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You could use select_dtypes method of DataFrame. It includes two parameters include and exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numer...
How to attach javadoc or sources to jars in libs folder?
...-open the Eclipse project! Optionally, refresh the project by pressing F5.
Select an object of the linked library in the source code.
Open the Javadoc view in Eclipse to check the documentation (see screenshot).
Open the source code declaration (default shortcut: F3) of the selected object.
Exam...
Displaying files (e.g. images) stored in Google Drive on a website
...kit, the following worked for me:
1 Make a folder called e.g. "public"
2 Select that folder, right click and Share > Share. Click. Select "Anyone can access"
3 Drag and Drop a file into the folder, and let it upload.
4 Right click on the file and select Details. One of the lines in the Detail...
Error Dropping Database (Can't rmdir '.test\', errno: 17)
...rop database command succeeded.
I don't know where the .empty file came from; as noted, this was a new mysql install. Perhaps something went wrong in the install process.
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Is there any simple way to find out unused strings in Android project?
...ed Resources....
Click Preview to see what the unused resources are and selectively remove them.
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Split a collection into `n` parts with LINQ?
... group item by i++ % parts into part
select part.AsEnumerable();
return splits;
}
}
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