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How to detect if a stored procedure already exists
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At least if you drop it you know you have to re-add the permissions. If you ran this sql you would not know whether the sproc had the correct permissions or not as you wouldn't know if you had created it or altered it.
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Is there a JSON equivalent of XQuery/XPath?
...e object may be".
The basics of jq are largely obvious or intuitive or at least quite simple, and most of the rest is easy to pick up if you're at all familiar with command-shell pipes. The jq FAQ has pointers to tutorials and the like.
jq is also like SQL in that it supports CRUD operations, tho...
LEFT JOIN only first row
...d to do this solution BECAUSE WE DID SOMETHING WRONG IN THE ANALYSIS... at least in my case... but sometimes it's cheaper to do this that to redesign everything...
I hope it helps!
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How can a Java program get its own process ID?
...s to be provided
// something like '<pid>@<hostname>', at least in SUN / Oracle JVMs
final String jvmName = ManagementFactory.getRuntimeMXBean().getName();
final int index = jvmName.indexOf('@');
if (index < 1) {
// part before '@' empty (index = 0) / '@' not...
Regex exactly n OR m times
...nces (?? is lazy, ? is greedy)
*, *? - any number of occurences
+, +? - at least one occurence
{n} - exactly n occurences
{n,m} - n to m occurences, inclusive
{n,m}? - n to m occurences, lazy
{n,}, {n,}? - at least n occurence
To get "exactly N or M", you need to write the quantified regex twice, ...
Structs in Javascript
...e accessed as string in this case, because the properties are renamed. (At least in advanced mode)
– kap
Mar 24 '16 at 8:15
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Random record in ActiveRecord
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I haven't found an ideal way to do this without at least two queries.
The following uses a randomly generated number (up to the current record count) as an offset.
offset = rand(Model.count)
# Rails 4
rand_record = Model.offset(offset).first
# Rails 3
rand_record = Model....
LIMIT 10..20 in SQL Server
...R BY name)" is mandatory, but I guess there is a good reason for it. Or at least a reason.
– Tomalak
Jun 9 '09 at 19:31
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How to write iOS app purely in C
...wever, unless you are thoroughly versed in OpenGL ES, You'll need to do at least some objC (Even Rich's sample has a const NSString* in it), else you'll have to write the views yourself.
OK, the above is completely wrong. Let me say, I'm astounded Rich achieved this lofty goal, so I ported it over...
How to update Identity Column in SQL Server?
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@luv at least you have answered to the question that was asked
– Phill Greggan
Jan 26 '15 at 8:09
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