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Replace a newline in TSQL
...e any of CR, LF or CR+LF. To get them all, you need something like this:
SELECT REPLACE(REPLACE(@str, CHAR(13), ''), CHAR(10), '')
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Inspect hovered element in Chrome?
...er over the element to bring up the tooltip, right click as if you were to select 'Inspect Element'. Leaving that context menu open, move the focus over to the dev tools. The html for the tooltip should show up next to the element its a tooltip for in the HTML. Then you can look at it as if it were ...
MySQL COUNT DISTINCT
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Select
Count(Distinct user_id) As countUsers
, Count(site_id) As countVisits
, site_id As site
From cp_visits
Where ts >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Group By site_id
...
String concatenation in MySQL
...most DBMSs use of + or || for concatenation. It uses the CONCAT function:
SELECT CONCAT(first_name, " ", last_name) AS Name FROM test.student
As @eggyal pointed out in comments, you can enable string concatenation with the || operator in MySQL by setting the PIPES_AS_CONCAT SQL mode.
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How to resize a VirtualBox vmdk file
... want to download gparted iso and boot from that iso to resize your drive (select the iso from within the virtualbox settings).
P.S. If your new size is too small, you'll get the same error even with your new vdi file.
shar...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
...machine, launch Xcode and do this:
Open the Organizer (Shift-Command-2).
Select the Devices tab.
Choose Developer Profile in the upper-left corner under LIBRARY, which may be under the heading library or under a heading called TEAMS.
Choose Export near the bottom left side of
the window. Xcode as...
How do I remove the first characters of a specific column in a table?
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SELECT RIGHT(MyColumn, LEN(MyColumn) - 4) AS MyTrimmedColumn
Edit:
To explain, RIGHT takes 2 arguments - the string (or column) to operate on, and the number of characters to return (starting at the "right" side of the stri...
Pandas conditional creation of a series/dataframe column
...
If you only have two choices to select from:
df['color'] = np.where(df['Set']=='Z', 'green', 'red')
For example,
import pandas as pd
import numpy as np
df = pd.DataFrame({'Type':list('ABBC'), 'Set':list('ZZXY')})
df['color'] = np.where(df['Set']=='Z', ...
How to fix Python indentation
... do this:
$ # see what changes it would make
$ autopep8 path/to/file.py --select=E101,E121 --diff
$ # make these changes
$ autopep8 path/to/file.py --select=E101,E121 --in-place
Note: E101 and E121 are pep8 indentation (I think you can simply pass --select=E1 to fix all indentation related issue...
HttpUtility does not exist in the current context
...e" in the Solution Explorer
Choose "Add Reference"
Check the ".NET" tab is selected.
Search for, and add "System.Web".
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