大约有 36,010 项符合查询结果（耗时：0.1208秒） [XML]
must appear in the GROUP BY clause or be used in an aggregate function
...0000
spain | usopp | 5.0000000000000000
But you may also use window functions, which looks simpler:
SELECT cname, wmname, MAX(avg) OVER (PARTITION BY cname) AS mx
FROM makerar
;
The only thing with this method is that it will show all records (window functions do not group). But it wil...
What are the benefits of using C# vs F# or F# vs C#? [closed]
I work for a tech company that does more prototyping than product shipment. I just got asked what's the difference between C# and F#, why did MS create F# and what scenarios would it be better than C#.
...
jQuery click not working for dynamically created items [duplicate]
... jQuery that loops through each element in a given div( #container ) and does a javascript alert each time a span is clicked. This works fine if the <span> 's are static.
...
C++ valarray vs. vector
...sors like the Crays.
For a vector processor, what you generally wanted to do was apply a single operation to an entire array, then apply the next operation to the entire array, and so on until you'd done everything you needed to do.
Unless you're dealing with fairly small arrays, however, that te...
Alter MySQL table to add comments on columns
I have been checking the MySQL Documentation for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this?
...
How to create Android Facebook Key Hash?
I do not understand this process at all. I have been able to navigate to the folder containing the keytool in the Java SDK. Although I keep getting the error openssl not recognised as an internal or external command. The problem is even if I can get this to work, what would I do and with what afterw...
Kill some processes by .exe file name
...
what should be do if above code return Exception (a 32 bit processes cannot access modules of a 64 bit process) ?
– Manish
Aug 31 '13 at 11:29
...
Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
Does java.util.List.isEmpty() check if the list itself is null , or do I have to do this check myself?
8 Answers
...
Matplotlib 2 Subplots, 1 Colorbar
...t.subplots(nrows=2, ncols=2)
for ax in axes.flat:
im = ax.imshow(np.random.random((10,10)), vmin=0, vmax=1)
fig.subplots_adjust(right=0.8)
cbar_ax = fig.add_axes([0.85, 0.15, 0.05, 0.7])
fig.colorbar(im, cax=cbar_ax)
plt.show()
Note that the color range will be set by the last image plotte...
How can one use multi threading in PHP applications
...
Multi-threading is possible in php
Yes you can do multi-threading in PHP with pthreads
From the PHP documentation:
pthreads is an object-orientated API that provides all of the tools needed for multi-threading in PHP. PHP applications can create, read, write, execut...