大约有 34,900 项符合查询结果（耗时：0.0250秒） [XML]
Password reset for Azure database
...page as admin, but I forgot the password to one of my databases. I would like to reset the password on that one DB. How do I do that? Microsoft doesn't seem to have a KB on that - at least not one I could find. Thx.
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how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
Some SQL servers have a feature where INSERT is skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
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How do you completely remove the button border in wpf?
...m trying to create a button that has an image in it and no border - just like the Firefox toolbar buttons before you hover over them and see the full button.
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Reshaping data.frame from wide to long format
...ert my data.frame from a wide table to a long table.
At the moment it looks like this:
9 Answers
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Change URL and redirect using jQuery
I have some code like this,
6 Answers
6
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android start activity from service
...this, MyActivity.class);
dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(dialogIntent);
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Large Numbers in Java
... for numbers with decimal digits. Both classes are defined in java.math package.
Example:
BigInteger reallyBig = new BigInteger("1234567890123456890");
BigInteger notSoBig = new BigInteger("2743561234");
reallyBig = reallyBig.add(notSoBig);
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Can javax.persistence.Query.getResultList() return null?
...pecification says nothing about it. But Java Persistence with Hibernate book, 2nd edition, says:
If the query result is empty, a null is returned
Hibernate JPA implementation (Entity Manager) return null when you call query.getResultList() with no result.
UPDATE
As pointed out by some users,...
Remove file from SVN repository without deleting local copy
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svn delete --keep-local the_file
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How do I write JSON data to a file?
...tual JSON part - data is a dictionary and not yet JSON-encoded. Write it like this for maximum compatibility (Python 2 and 3):
import json
with open('data.json', 'w') as f:
json.dump(data, f)
On a modern system (i.e. Python 3 and UTF-8 support), you can write a nicer file with
import json
wi...