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How to keep index when using pandas merge
... 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a and b. In this case, you may need to drop duplicates.
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Sending email with PHP from an SMTP server
...n plain text for non-HTML mail clients';
$mail->send();
You can find more about PHPMailer here: https://github.com/PHPMailer/PHPMailer
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How do you create a dictionary in Java? [closed]
...designed/optimized for certain situations (go to their respective docs for more info). HashMap is probably the most common; the go-to default.
For example (using a HashMap):
Map<String, String> map = new HashMap<String, String>();
map.put("dog", "type of animal");
System.out.println(ma...
Is there an easy way to create ordinals in C#?
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Update or Insert (multiple rows and columns) from subquery in PostgreSQL
...ut throwing an error (independently for each row). I think that would be a more complete solution to the question (for example: stackoverflow.com/a/6527838/781695)
– user
Dec 24 '14 at 5:08
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Can I use multiple “with”?
...d they are not tables. These are CTEs - Common Table Expressions. They are more like... named queries that you can use as if they were tables... or rather more like views. Please google them. They are neat. It is one of the best standard SQL features, helping enormously to keep complex queries under...
What is the maximum length of data I can put in a BLOB column in MySQL?
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A BLOB can be 65535 bytes (64 KB) maximum.
If you need more consider using:
a MEDIUMBLOB for 16777215 bytes (16 MB)
a LONGBLOB for 4294967295 bytes (4 GB).
See Storage Requirements for String Types for more info.
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What does 'require: false' in Gemfile mean?
...bjects takes work, and the GC has to run through all of them each time, so more = slower, according to confreaks.com/videos/2668-gogaruco2013-measuring-ruby
– Nathan Long
Oct 12 '13 at 14:11
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Using GPU from a docker container?
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How to efficiently count the number of keys/properties of an object in JavaScript?
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