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What is a columnar database?
...an easy fashion).
How do they differ from relational databases?
They generally differ from traditional (row-oriented) databases with regards to ...
performance...
storage requirements ...
ease of modification of the schema ...
...in specific use cases of DBMSes.
In particular they offer advanta...
Entity Framework Timeouts
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@ErikPetru, this is actually a very common practice and makes the code more readable.
– Calvin
Dec 10 '13 at 18:51
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How to test an SQL Update statement before running it?
...verflow.com/a/18499823/1416909
):
# do some stuff that should be conditionally rollbacked later on
SET @v1 := UPDATE MyGuests SET lastname='Doe' WHERE id=2;
IF(v1 < 1) THEN
ROLLBACK;
ELSE
COMMIT;
END IF;
But I would suggest to use the language wrappers available in your favorite progr...
Format a number as 2.5K if a thousand or more, otherwise 900
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Small fix for numbers less < 1000, add {value: 1E0, symbol: ""} to var si =
– Dimmduh
Aug 11 '16 at 10:09
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Using reCAPTCHA on localhost
...a human verification in one of the sessions. For the development, I'm initially running the system locally and when it is ready, I'm gonna make put it on in a certain domain.
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Comparison of Lucene Analyzers
...text. For example, KeywordAnalyzer you mentioned doesn't split the text at all and takes all the field as a single token. At the same time, StandardAnalyzer (and most other analyzers) use spaces and punctuation as a split points. For example, for phrase "I am very happy" it will produce list ["i", "...
Convert String to Calendar Object in Java
I am new to Java, usually work with PHP.
8 Answers
8
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Extract hostname name from string
...pm package psl (Public Suffix List). The "Public Suffix List" is a list of all valid domain suffixes and rules, not just Country Code Top-Level domains, but unicode characters as well that would be considered the root domain (i.e. www.食狮.公司.cn, b.c.kobe.jp, etc.). Read more about it here.
T...
How Can I Download a File from EC2 [closed]
... @gideon That definitively should work as expected (i.e. recursively copy all files from /srv/www/myapp/ to the local machine). Wild guess - are you running scp from your ec2 server perhaps? If yes, you need to run it from your local machine (i.e. the machine you want to copy files to).
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In Rails - is there a rails method to convert newlines to ?
...imple_format
Example:
simple_format(mystring)
Note that simple_format allows basic HTML tags, but also passes text through sanitize which removes all scripts, so it should be safe for user input.
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