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Can table columns with a Foreign Key be NULL?
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251
Yes, you can enforce the constraint only when the value is not NULL. This can be easily tested...
How to install python3 version of package via pip on Ubuntu?
...on3, which you can find out with which python3
– user2503795
Aug 10 '13 at 10:49
2
Following @Len...
How well is Unicode supported in C++11?
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– R. Martinho Fernandes
Jun 14 '13 at 11:25
6
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Add IIS 7 AppPool Identities as SQL Server Logons
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answered Feb 25 '15 at 19:25
Dan BDan B
1,6402020 silver badges3030 bronze badges
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How to remove elements from a generic list while iterating over it?
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answered Oct 17 '09 at 14:25
JanJan
1,39911 gold badge1010 silver badges1515 bronze badges
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Difference between CC, gcc and g++?
...5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.951...
How do I get a class instance of generic type T?
...et it a second time.
– Adowrath
Aug 25 '17 at 7:03
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Rails: fields_for with index?
...s notapatch said
– JudgeProphet
Sep 25 at 14:37
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detach all packages while working in R
...is vegan 2.0-0
> sessionInfo()
R version 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_GB.utf8
[5] LC_MONETARY=C LC_MESSAGES=en_GB.utf8 ...
Is there a way to pass optional parameters to a function?
...5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.951...