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Is there any NoSQL data store that is ACID compliant?
...ed due to the use of Erlang, but there are others out there.
I'd say ACID does not contradict or negate the concept of NoSQL... While there seems to be a trend following the opinion expressed by dove , I would argue the concepts are distinct.
NoSQL is fundamentally about simple key-value (e.g. Red...
Is the SQL WHERE clause short-circuit evaluated?
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Doesn't this mean that the expression evaluations are ill-defined? "(0=0 OR NULL)", is always NULL if all terms are evaluated, but always true if evaluated left-to-right and short circuited.
– user48956
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Convert timestamp in milliseconds to string formatted time in Java
... solution better than the accepted answer as it is a bit more explicit and does not suffer problems with locale. Though you miss the final part: millis = millis % 1000, which would rightly put milliseconds at the end of the formatted string.
– Ondrej Burkert
Ja...
Detecting input change in jQuery?
... event fires but no change has been made to the input.). Also this method doesn't fire if the user right-clicks and pastes from the context menu:
$('#someInput').keyup(function() {
$(this).val() // get the current value of the input field.
});
Method 3. Timer (setInterval or setTimeout)
To ...
Shards and replicas in Elasticsearch
...cify a number it will have the default number of shards: 5 primaries. What does it mean?
It means that elasticsearch will create 5 primary shards that will contain your data:
____ ____ ____ ____ ____
| 1 | | 2 | | 3 | | 4 | | 5 |
|____| |____| |____| |____| |____|
Ever...
Override valueof() and toString() in Java enum
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does not work in a scenarios where you cannot change the calling of valueOf() method to getValue() e.g. when you define certain fields via Hibernate annotations to map to enum values
– mmierins
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Is there a label/goto in Python?
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No, Python does not support labels and goto, if that is what you're after. It's a (highly) structured programming language.
share
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im...
How to discard local commits in Git?
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@littletiger git does not track folders, only files and their paths. Therefore, it will completely ignore empty folders (folders with no files, or only ignored files). They don't show up anywhere as there is nothing to go in them.
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JavaScript blob filename without link
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This does not work for me because I need to open the file in a new tab. I have to show a PDF in Chrome, but I need to show a user friendly name in the URL toolbar, and if the user wants to download through the download icon, I hav...
Storing time-series data, relational or non?
...the columns identified in the WHERE clause, it is very fast, and the query does not depend on the size of the table (grabbing 1,000 rows from a 16 billion row table is instantaneous).
Your table has one serious impediment. Given your description, the actual PK is (Device, Metric, DateTime). (Pleas...