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SQL Server Management Studio, how to get execution time down to milliseconds
...able in your proc:
DECLARE @EndTime datetime
DECLARE @StartTime datetime
SELECT @StartTime=GETDATE()
-- Write Your Query
SELECT @EndTime=GETDATE()
--This will return execution time of your query
SELECT DATEDIFF(ms,@StartTime,@EndTime) AS [Duration in millisecs]
AND see this
Measuring Quer...
Select Pandas rows based on list index
...
For large datasets, it is memory efficient to read only selected rows via the skiprows parameter.
Example
pred = lambda x: x not in [1, 3]
pd.read_csv("data.csv", skiprows=pred, index_col=0, names=...)
This will now return a DataFrame from a file that skips all rows except 1 and ...
Python/postgres/psycopg2: getting ID of row just inserted
... case you can use:
cursor.execute('INSERT INTO ........')
cursor.execute('SELECT LASTVAL()')
lastid = cursor.fetchone()['lastval']
Just in case it was useful for anyone!
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Access “this” from Java anonymous class
...
Container.this.select();
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SQL Server: Get data for only the past year
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The following adds -1 years to the current date:
SELECT ... From ... WHERE date > DATEADD(year,-1,GETDATE())
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Programmatically creating Markdown tables in R with KnitR
...:) Please note that you might also use the generic S3 method to save a few chars to type, like: pander(head(iris)[, 1:3])
– daroczig
Mar 19 '13 at 9:23
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How do I create a new GitHub repo from a branch in an existing repo?
... that by using this method, I could create the new repo with a hand-picked selection of branches, renamed as I wanted:
$ git push git@github.com:accountname/new_repo +new-project:master +site3a:rails3
The result is that the pre-existing site3a branch is now also moved to the new repo and will appe...
How to link to specific line number on github
...s://github.com/git/git/blob/master/README#L18
If you want multiple lines selected, simply hold down the shift key and click a second line number, like line 20. Looks like this:
And now your browser's URL looks like this:
https://github.com/git/git/blob/master/README#L18-L20
Here's the import...
jQuery: How can i create a simple overlay?
...
}
JavaScript
(function () {
// Add photo overlay hover behavior to selected images
$("img[data-photo-overlay='true']").mouseenter(showPhotoOverlay);
// Create photo overlay elements
var _isPhotoOverlayDisplayed = false;
var _photoId;
var _photoOverlay = $("<div id='ph...
Python Pandas: Get index of rows which column matches certain value
... [57]: idx
Out[57]: Int64Index([10, 40, 50], dtype='int64')
then you can select the rows using loc instead of iloc:
In [58]: df.loc[idx]
Out[58]:
BoolCol
10 True
40 True
50 True
[3 rows x 1 columns]
Note that loc can also accept boolean arrays:
In [55]: df.loc[df['BoolCol']]
Ou...