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Throw an error in a MySQL trigger
... columns (idUser and idGuest) that must be mutually exclusive in the table orders, but i'm fairly new to triggers and i'm finding difficulties in writing it!Thx.
– Nicola Peluchetti
Mar 12 '11 at 14:44
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CSS3 background image transition
...ormal" state will be first child your container, or change the nth-child() order)
CSS2 solution http://jsfiddle.net/eD2zL/2/ (differences between are just a few selectors)
Basically, you need to hide "normal" state and show their "hover" when you hover it
and that's it, I hope somebody find it us...
How to sum array of numbers in Ruby?
.../en.wikipedia.org/wiki/MapReduce
http://en.wikipedia.org/wiki/Fold_(higher-order_function)
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What is a good reason to use SQL views?
...most useful when you always need
to join the same set of tables say an
Order with an Order Detail to get
summary calculation fields etc.
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Get the Row(s) which have the max count in groups using groupby
...s) I found it to be very slow. Here is an alternative that I found to run orders of magnitude faster on my data set.
df = pd.DataFrame({
'sp' : ['MM1', 'MM1', 'MM1', 'MM2', 'MM2', 'MM2', 'MM4', 'MM4', 'MM4'],
'mt' : ['S1', 'S1', 'S3', 'S3', 'S4', 'S4', 'S2', 'S2', 'S2'],
'val' : ['a', ...
Split files using tar, gz, zip, or bzip2 [closed]
... That works correctly only on NTFS and if the files are in NTFS sort order already. Try it on FAT or FAT32 = boom.
– Joshua
Sep 20 '13 at 20:27
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Can I zip more than two lists together in Scala?
...n you suggest an improved version that produces the output in the expected order? thanks
– fracca
Jun 12 '13 at 15:51
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How to fix “Headers already sent” error in PHP
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Unintentional:
Whitespace before <?php or after ?>
The UTF-8 Byte Order Mark specifically
Previous error messages or notices
Intentional:
print, echo and other functions producing output
Raw <html> sections prior <?php code.
Why does it happen?
To understand why header...
Is it possible to use the SELECT INTO clause with UNION [ALL]?
...e you selected top 100? When we select all records it gives error as- "The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP or FOR XML is also specified. ". Please give some solution.
– ShaileshDev
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List comprehension on a nested list?
... Super useful! Makes it clear that loops (top-to-bottom) are ordered left to right in the generator. This not obvious since in (f(x) for x in l) places the second line of the for-loop equivalent on the left.
– user48956
Jan 11 '18 at 18:11
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