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Does the join order matter in SQL?

...OIN. Does it work like that first the query will Filter the records on the base of INNER JOIN and then will apply LEFT JOIN to the Filtered records? – Muhammad Babar Feb 12 '15 at 13:09 ...
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Mongodb Explain for Aggregation framework

...ious types of reports or analysis on documents in one or more collections. Based on the idea of a pipeline. We take input from a MongoDB collection and pass the documents from that collection through one or more stages, each of which performs a different operation on it's inputs. Each stage takes as...
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Why is NaN not equal to NaN? [duplicate]

... people wanted to use NaN to represent missing values and put them in hash-based containers, they couldn't do it. If the committee foresaw future use cases, and considered them important enough, they could have gone for the more verbose !(x<x & x>x) instead of x!=x as a test for NaN. How...
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Do HttpClient and HttpClientHandler have to be disposed between requests?

...nges. This can be an issue in scenarios like blue/green deployment and DNS-based failover. There are various approaches for dealing with this issue, the most reliable one involving the server sending out a Connection:close header after DNS changes take place. Another possibility involves recycling t...
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Shell equality operators (=, ==, -eq)

...-eq causes the strings to be interpreted as integers if possible including base conversion: $ [[ "0x10" -eq 16 ]]; echo $? 0 $ [[ "010" -eq 8 ]]; echo $? 0 $ [[ "100" -eq 100 ]]; echo $? 0 And 0 if Bash thinks it is just a string: $ [[ "yes" -eq 0 ]]; echo $? 0 $ [[ "yes" -eq 1 ]]; echo $? 1 S...
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Implementing MVC with Windows Forms

... I have seen are (including most combinations): Directly talk to the database (2 tier) Use a backend that has been written for the given application (3 tier) Use a set of web services that were written for use by many applications and can’t be changed for your application. (Service-oriented arch...
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node.js child process - difference between spawn & fork

...n essentially create multiple workers, running on the exact same Node code base, or perhaps a different module for a specific task. This is most useful for creating a worker pool. While node's async event model allows a single core of a machine to be used fairly efficiently, it doesn't allow a nod...
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Correct use for angular-translate in controllers

...ppening is that Angular-translate is watching the expression with an event-based system, and just as in any other case of binding or two-way binding, an event is fired when the data is retrieved, and the value changed, which obviously doesn't work for translation. Translation data, unlike other dyn...
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Streaming a video file to an html5 video player with Node.js so that the video controls continue to

... Hi, tungd, thanks for responding! the use case is a raspberry pi based device that will act as a media distribution platform for educational content developers. We are free to choose the encryption algorithm, the key will be in firmware - but memory is limited to 1GB RAM and the content si...
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client secret in OAuth 2.0

...er. Yes there is a real possibility for this and there were some exploits based on this. Suggestion is not to keep the app secret in your app, there is even part in the spec that distributed apps should not use this token. Now you might ask, but XYZ requires it in order to work. In that case they a...