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How do I drop a function if it already exists?
...issue the DROP FUNCTION <name> statement and not worry about any SQL error that might come back. I consider that standard procedure in the DBA realm.
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Selecting only numeric columns from a data frame
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When there is no numeric column, the following error arise undefined columns selected. How do you avoid it ?
– Yohan Obadia
Aug 13 '16 at 14:15
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Auto Generate Database Diagram MySQL [closed]
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It strikes me with amount of errors I am getting and installations I need to do to make it work on Linux.
– Damir Olejar
Dec 7 '16 at 17:45
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Simple calculations for working with lat/lon and km distance?
...ula using the WGS84 reference ellipsoid (the model used for GPS). But the error is probably negligible for your purposes.
Source: http://en.wikipedia.org/wiki/Latitude
Caution: Be aware that latlong coordinates are expressed in degrees, while the cos function in most (all?) languages typically ac...
index.php not loading by default
...y solution was that mod_dir was not enabled and apache2 was not issuing an error when reading the directive in my VirtualHost file:
DirectoryIndex index.html
Using the commands:
sudo a2enmod dir
sudo sudo service apache2 restart
Fixed the issue.
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How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...e correct:
def ColIdxToXlName(idx):
if idx < 1:
raise ValueError("Index is too small")
result = ""
while True:
if idx > 26:
idx, r = divmod(idx - 1, 26)
result = chr(r + ord('A')) + result
else:
return chr(idx + ord('A') ...
Simple argparse example wanted: 1 argument, 3 results
...ow required. If you leave it out when invoking this program, you'll get an error about missing arguments. This leads me to the second part of the original question. Matt Wilkie seems to want a single optional argument without a named label (the --option labels). My suggestion would be to modify the ...
Java: Get last element after split
...xOutOfBoundsException rather than return null here, since you'll catch the error where it occurs rather when it causes the problem.
– Emil H
Jul 25 '09 at 12:15
1
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Cocoapods setup stuck on pod setup command on terminal
...move master
pod setup
worked for me
Answered in below question as well,
Error on pod install
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Ruby on Rails: How can I revert a migration with rake db:migrate?
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I'm getting an UnknownMigrationVersionError but I figured out it's because my migrations are inside db/migrate/main , does anybody know a workaround for this to have db:migrate:down look inside that specific directory or the migrate subdirectories?
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