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Rails DB Migration - How To Drop a Table?
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@mjnissim and fflyer05 are correct, in order to avoid any weird thing you should recreate the table in the down method.
– Sebastialonso
Jan 23 '15 at 16:43
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vagrant up failed, /dev/vboxnetctl: no such file or directory
...tl: No such file or directory.
These commands are not used in particular order. They are just generally useful and problem-solving.
1) sudo modprobe vboxdrv
2) sudo modprobe vboxnetadp - (host only interface)
3) sudo modprobe vboxnetflt - (make vboxnet0 accecible)
IF YOU HAVE PROBLEMS WITH...
Find index of last occurrence of a sub-string using T-SQL
...ion, followed CHARINDEX, followed again by REVERSE to restore the original order. For instance:
SELECT
mf.name
,mf.physical_name
,reverse(left(reverse(physical_name), charindex('\', reverse(physical_name)) -1))
from sys.master_files mf
shows how to extract the actual database file names f...
Positions fixed doesn't work when using -webkit-transform
... due to the two effects requiring separate coordinate systems and stacking orders. As explained in this answer.
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What is the purpose of flush() in Java streams?
...t to output(file,console) then you need to call flush() method manually in order to write partially filled buffer to output(file,console).
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Difference between \w and \b regular expression meta characters
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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How to resize superview to fit all subviews with autolayout?
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Eric Baker's comment tipped me off to the core idea that in order for a view to have its size be determined by the content placed within it, then the content placed within it must have an explicit relationship with the containing view in order to drive its height (or width) dynamicall...
How does BLAS get such extreme performance?
...itten for one matrix already being transposed. That's why it's "only" one order of magnitude slower than BLAS! But yeah, it's still thrashing because of the lack of cache-blocking. Are you sure Fortran would help much? I think all you'd gain here is that restrict (no aliasing) is the default, un...
PostgreSQL DISTINCT ON with different ORDER BY
...equal. [...] Note that the "first row" of each set is unpredictable unless ORDER BY is used to ensure that the desired row appears first. [...] The DISTINCT ON expression(s) must match the leftmost ORDER BY expression(s).
Official documentation
So you'll have to add the address_id to the order by...
How to select label for=“XYZ” in CSS?
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