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What is the difference between single and double quotes in SQL?
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Single quotes delimit a string constant or a date/time constant.
Double quotes delimit identifiers for e.g. table names or column names. This is generally only necessary when your identifier doesn't fit the rules for simple identifiers.
See also:
Do different databases ...
Is it possible to push a git stash to a remote repository?
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I'm learning a lot in little time, and I feel I should probably simply many command usages in my earlier approach, which I will try to do later.
– sehe
Mar 13 '11 at 2:00
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Determine Whether Integer Is Between Two Other Integers?
...mplexity of in set(range(0, n)) is still O(n) because building a set has a time complexity of O(n) ics.uci.edu/~pattis/ICS-33/lectures/complexitypython.txt
– Paolo Moretti
Aug 12 '15 at 12:16
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What’s the best RESTful method to return total number of items in an object?
...nd affect my data. However, this data is paged (limited to 30 results at a time).
12 Answers
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
... *sum = (double*)malloc(tds * sizeof(double));
double start = omp_get_wtime();
#pragma omp parallel num_threads(tds)
{
double ret = test_dp_mac_SSE(1.1,2.1,iterations);
sum[omp_get_thread_num()] = ret;
}
double secs = omp_get_wtime() - start;
uint64 ops = 48 * 1...
NodeJS: How to get the server's port?
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In case when you need a port at the time of request handling and app is not available, you can use this:
request.socket.localPort
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How to dynamically insert a tag via jQuery after page load?
...cripts or bring their own, but these scripts do not need to be loaded everytime again. I am using this snippet since more than a year in production environment, it works like a charme. Commenting to myself: Yes I know, it would be more correct to ask if a function exists... :-)
if (!$('head > sc...
How to determine the first and last iteration in a foreach loop?
...ration of the loop - if it's both then that's 4 methods being called every time. Granted, those would be very lightweight operations and are probably just pointer lookups, but then the docs do go on to specify that reset() and end() modify the array's internal pointer - so is it quicker than a count...
Can I use Objective-C blocks as properties?
...t a block property in one thread and read it in another thread at the same time, or to set the block property simultaneously from multiple threads. So the cost of "atomic" vs. "nonatomic" doesn't give you any real advantages.
– gnasher729
Mar 30 '14 at 21:13
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How to group time by hour or by 10 minutes
...0,1) * 5, so that when I look at the data it's correlated with the nearest time slot
– hdost
Aug 3 '15 at 15:46
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