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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?

...te in PostgreSQL? http://petereisentraut.blogspot.com/2010/05/merge-syntax.html Upsert with a transaction Is SELECT or INSERT in a function prone to race conditions? SQL MERGE on the PostgreSQL wiki Most idiomatic way to implement UPSERT in Postgresql nowadays What about MERGE? SQL-standard MERGE a...
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MySQL, update multiple tables with one query

...an read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f "join"). ...
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Is there a way to pass optional parameters to a function?

...ython.org/2/reference/…, c) read docs.python.org/2/reference/expressions.html#calls . Sorry, running out of characters permitted in this comment. – Jim DeLaHunt Feb 6 '18 at 19:19 ...
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Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La

...omponent didn't work for me. Replacing all the special characters with XML/HTML entities and then converting to the base64 representation was the only way to solve this issue for me. Some code: base64 = btoa(str.replace(/[\u00A0-\u2666]/g, function(c) { return '&#' + c.charCodeAt(0) + ';'; ...
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What arguments are passed into AsyncTask?

...urther refer : http://developer.android.com/reference/android/os/AsyncTask.html Or You Can clear whats the role of AsyncTask by refering Sankar-Ganesh's Blog Well The structure of a typical AsyncTask class goes like : private class MyTask extends AsyncTask<X, Y, Z> protected void onPre...
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What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?

.... N.p., 2001. Web. 29 Sept. 2015. http://ruby-doc.com/docs/ProgrammingRuby/html/tut_exceptions.html. share | improve this answer | follow | ...
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When do you use POST and when do you use GET?

...n't sticking information into a URL. And so using GET as the method for an HTML form that collects a password or other sensitive information is not the best idea. One final note: POST can transmit a larger amount of information than GET. 'POST' has no size restrictions for transmitted data, whilst ...
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Repeater, ListView, DataList, DataGrid, GridView … Which to choose?

...t what you trying to achieve Gridview - Limited in design, works like an html table. More in built functionality like edit/update, page, sort. Lots of overhead. DataGrid - Old version of the Gridview. A gridview is a super datagrid. Datalist - more customisable version of the Gridview. Also has s...
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What are the differences between poll and select?

... good introduction to the effort: http://scotdoyle.com/python-epoll-howto.html While this link has some nice graphs showing the benefits of epoll() (you will note that select() is by this point considered so inefficient and old-fashioned that it does not even get a line on these graphs!): http://...
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Best way to get child nodes

...ally just a new line and a couple of tabs in the code. Is this due to the XHTML doctype? can this be resolved by enclosing the whitespace to struct code within the tags? – Elias Van Ootegem Apr 30 '12 at 10:07 ...