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Are foreign keys really necessary in a database design?
...should not be a primary reason for FKs. (In fact in certain circumstances (More inserts than selects for example) maintaining a FK might be slower. )
– Robert
Mar 21 '10 at 17:28
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PHP Get Site URL Protocol - http vs https
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I know it's late, although there is a much more convenient way to solve this kind of problem! The other solutions are quite messy; this is how I would do it:
$protocol = stripos($_SERVER['SERVER_PROTOCOL'],'https') === 0 ? 'https://' : 'http://';
...or even without...
LF will be replaced by CRLF in git - What is that and is it important? [duplicate]
...tting and Whitespace
Formatting and whitespace issues are some of the more frustrating and
subtle problems that many developers encounter when collaborating,
especially cross-platform. It’s very easy for patches or other
collaborated work to introduce subtle whitespace changes because
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what is the use of xsi:schemaLocation?
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For more info on the spring intercept layer, see stackoverflow.com/a/10768972/32453
– rogerdpack
Jan 9 '17 at 19:34
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Save PL/pgSQL output from PostgreSQL to a CSV file
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Green Bars in Visual Studio 2010
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They show lines that you have changed.
See here for more details and a table showing what the different colours mean:
+-----------+------------------------------+-------------------------+
| Marker | Different from | Different from file |
| colour | ...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
... ANSI SQL 2003 defines a MERGE statement that can solve the same need (and more), but MySQL does not support the MERGE statement.
A user tried to edit this post (the edit was rejected by moderators). The edit tried to add a claim that INSERT...ON DUPLICATE KEY UPDATE causes a new auto-increment ...
Finding the type of an object in C++
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Why can lambdas be better optimized by the compiler than plain functions?
...mbdas instead of a function pointer here brings up to seven-fold (probably more, but I have no data on that!) performance increases.
– Konrad Rudolph
Mar 4 '14 at 16:37
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How to query SOLR for empty fields?
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