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How to concatenate text from multiple rows into a single text string in SQL server?
... FROM dbo.Students ST2
) [Main]
You can do the same thing in a more compact way if you can concat the commas at the beginning and use substring to skip the first one so you don't need to do a sub-query:
SELECT DISTINCT ST2.SubjectID,
SUBSTRING(
(
SELECT ','+ST1....
How do I format a date in Jinja2?
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{{ car.date_of_manufacture|datetime('full') }}
which looks nicer and is more maintainable. Another common filter is also the "timedelta" filter, which evaluates to something like "written 8 minutes ago". You can use babel.dates.format_timedelta for that, and register it as filter similar to the d...
Giving UIView rounded corners
...ed me an hour of fighting with an image editor and would have made my view more brittle to color / sizing changes. Thanks!
– Justin Searls
Feb 20 '10 at 16:43
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promise already under evaluation: recursive default argument reference or earlier problems?
...ke test<- function(g.=g, T=1, f..=f){ g.(1,T, f.=f..) }? In cases with more recursions, is it a good and safe practice adding more .? (2) if f is a non-function argument, for example g <- function(x, T, f=f){ exp(-fx/T) }* and test<- function(g.=g, T=1, f=f){ g.(1,T, f=f.) }, will using t...
Copying PostgreSQL database to another server
...s to copy from local to remote and the second one is from remote to local. More -> https://www.postgresql.org/docs/9.6/app-pgdump.html
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No Swipe Back when hiding Navigation Bar in UINavigationController
...e behaviour occurs, the back is disabled and whole app doens't respond any more
– KarimIhab
Jun 14 '16 at 13:28
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Getting an element from a Set
...being mapped. In fact, the whole object 'revolves' around said key. Furthermore, the caller knows said String, but not the object itself; that's exactly why it wants to retrieve it by key. I'm using a Map now of course, but it remains odd behaviour.
– pauluss86
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How do I add more members to my ENUM-type column in MySQL?
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There's more than one column in my carmake table. Could that have anything to do with it?
– Zaid
Oct 1 '09 at 5:14
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Best way to merge two maps and sum the values of same key?
...ator, so you get the sum of values for each duplicate key.
Edit: A little more detail, as per user482745's request.
Mathematically a semigroup is just a set of values, together with an operator that takes two values from that set, and produces another value from that set. So integers under additi...
'AND' vs '&&' as operator
...y people thinking they are exactly the same thing and the answers here are more testimonials.
– Marco Demaio
May 24 '11 at 15:44
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