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CAP theorem - Availability and Partition Tolerance
...ing some examples in each category, eg. blog.nahurst.com/visual-guide-to-nosql-systems
– bitinn
Apr 22 '15 at 8:22
it'...
Is there a command for formatting HTML in the Atom editor?
...Ruby, Java, C, C++, C#, Objective-C, CoffeeScript, TypeScript, Coldfusion, SQL, and more) in Atom within a matter of seconds.
To Install the atom-beautify package :
Open Atom Editor.
Press Ctrl+Shift+P (Cmd+Shift+P on mac), this will open the atom Command Palette.
Search and click on Install Packag...
How do I use itertools.groupby()?
...itions.
Edit: Note that this is what separates itertools.groupby from the SQL GROUP BY semantics: itertools doesn't (and in general can't) sort the iterator in advance, so groups with the same "key" aren't merged.
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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
... @chrisinmtown Eclipselink will not include the column in the sql at all. I expect it is the same with Hibernate
– Jaqen H'ghar
Jan 6 '19 at 19:20
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What is a software framework? [closed]
...ata-persistence/storage layer, or - if you're too busy - just write custom SQL for every single database access.
You can write your own authentication and session handling layers.
And your own template rending logic.
And your own exception-handling logic.
And your own security functions.
And yo...
What columns generally make good indexes?
...ut indexes, what columns are good index candidates? Specifically for an MS SQL database?
12 Answers
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Check if a Postgres JSON array contains a string
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As of PostgreSQL 9.4, you can use the ? operator:
select info->>'name' from rabbits where (info->'food')::jsonb ? 'carrots';
You can even index the ? query on the "food" key if you switch to the jsonb type instead:
alter tabl...
What is the basic difference between the Factory and Abstract Factory Design Patterns? [closed]
...erent contexts. Examples could be different factories for different OS'es, SQL providers, middleware-drivers etc..
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What data type to use for hashed password field and what length?
...).
$2y$10$.vGA1O9wmRjrwAVXD98HNOgsNpDczlqm3Jq7KnEd1rVAGv3Fykk1a
Use the SQL data type CHAR(60) to store this encoding of a Bcrypt hash. Note this function doesn't encode as a string of hexadecimal digits, so we can't as easily unhex it to store in binary.
Other hash functions still have uses, bu...
Which encoding opens CSV files correctly with Excel on both Mac and Windows?
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This works well for SQL data exports with diacritics.
– motorbaby
Nov 15 '16 at 16:31
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