大约有 31,100 项符合查询结果（耗时：0.0523秒） [XML]
Is a view faster than a simple query?
...an even greater advantage.
Note that I'm just using a straight b-tree for my example. While I'm fairly certain that SQL Server uses some variant of a b-tree, I don't know the details. Nonetheless, the point holds.
Update 3: The question has come up about whether an Indexed View just uses an index...
Which HTML5 reset CSS do you use and why? [closed]
... the (over friendly) side I'm sure due to popularity. At the moment 80% of my customized reset is boilerplate.
I'm going to go though all three bit by bit and make my own, it's not rocket science.
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Select columns from result set of stored procedure
...clare @tablevar table(col1 col1Type,..
insert into @tablevar(col1,..) exec MyStoredProc 'param1', 'param2'
SELECT col1, col2 FROM @tablevar
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Are there any free Xml Diff/Merge tools available? [closed]
I have several config files in my .net applications which I would like to merge application settings elements etc.
11 Answe...
Command to remove all npm modules globally?
...an into EINTEGRITY errors when running npm install again. I had to delete my package-lock.json file as well.
– ToastyMallows
Apr 25 '18 at 16:00
1
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First-time database design: am I overengineering? [closed]
I'm a first year CS student and I work part time for my dad's small business. I don't have any experience in real world application development. I have written scripts in Python, some coursework in C, but nothing like this.
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How to build query string with Javascript
...arch for an answer to this question some while ago, but I ended up writing my own function that extracts the values from the form ..
it's not perfect but it fits my needs.
function form_params( form )
{
var params = new Array()
var length = form.elements.length
for( var i = 0; i < l...
How can I quickly sum all numbers in a file?
...this with a file containing 1,000,000 numbers (in the range 0 - 9,999). On my Mac Pro, it returns virtually instantaneously. That's too bad, because I was hoping using mmap would be really fast, but it's just the same time:
use 5.010;
use File::Map qw(map_file);
map_file my $map, $ARGV[0];
$sum +...
npm check and update package if needed
...
just did npm update on my npm 5.6.0 and it broke all code; luckily I backed up my files before doing that
– Armand
Jul 18 at 12:18
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Split (explode) pandas dataframe string entry to separate rows
...t have the same # of elements in each row:
In [134]: df
Out[134]:
aaa myid num text
0 10 1 [1, 2, 3] [aa, bb, cc]
1 11 2 [] []
2 12 3 [1, 2] [cc, dd]
3 13 4 [] []
In [135]: explode(df, ['num','text'], fill...