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postgresql - sql - count of `true` values
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ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...ould be smart to encapsulate ADO.NET functionality into a DB-Class(me too 10 years ago). Mostly they decide to use static/shared objects since it seems to be faster than to create a new object for any action.
That is neither a good idea in terms of peformance nor in terms of fail-safety.
Don't poa...
What is the difference between `after_create` and `after_save` and when to use which?
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edited Jul 18 '12 at 0:10
answered Jun 21 '11 at 8:12
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How do I make this file.sh executable via double click?
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edited Mar 10 '12 at 21:16
answered Mar 10 '12 at 21:09
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Can't find a “not equal” css attribute selector
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mehulmptmehulmpt
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JSON: why are forward slashes escaped?
...ire you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out.
Some of Microsoft's ASP.NET Ajax/JSON API's use this loophol...
How do sessions work in Express.js with Node.js?
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edited May 4 '15 at 10:40
Peter Mortensen
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Pragma in define macro
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If you're using c99 or c++0x there is the pragma operator, used as
_Pragma("argument")
which is equivalent to
#pragma argument
except it can be used in macros (see section 6.10.9 of the c99 standard, or 16.9 of the c++0x final committee draft)
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How to compare types
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answered Mar 30 '11 at 6:47
JaredParJaredPar
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Limiting the number of records from mysqldump?
... skaffman says, use the --where option:
mysqldump --opt --where="1 limit 1000000" database
Of course, that would give you the first million rows from every table.
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