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PostgreSQL - fetch the row which has the Max value for a column
I'm dealing with a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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How can I verify if a Windows Service is running
...implemented as a Windows Service. When the device boots, this service typically takes some time to start. I'd like to check, from my code, if the service is running. How can I accomplish this?
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Is there a way to list open transactions on SQL Server 2000 database?
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For all databases query sys.sysprocesses
SELECT * FROM sys.sysprocesses WHERE open_tran = 1
For the current database use:
DBCC OPENTRAN
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AngularJS : Clear $watch
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$watch returns a deregistration function. Calling it would deregister the $watcher.
var listener = $scope.$watch("quartz", function () {});
// ...
listener(); // Would clear the watch
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How to switch position of two items in a Python list?
...problem on the net (probably because switch, position, list and Python are all such overloaded words).
7 Answers
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Why use pip over easy_install? [closed]
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Many of the answers here are out of date for 2015 (although the initially accepted one from Daniel Roseman is not). Here's the current state of things:
Binary packages are now distributed as wheels (.whl files)—not just on PyPI, but in third-party repositories like Christoph Gohlke's Exten...
Internet Explorer's CSS rules limits
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It's actually those same two links that have me confused. The KB says "All style rules after the first 4,095 rules are not applied.", which to me implies that it is per-page, the other link says "A sheet may contain up to 4095 rules",...
How to manually install an artifact in Maven 2?
I've encountered some errors when I tried to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command
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Visual Studio Clicking Find Results Opens Code in Wrong Window
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Thanks. Works in VS2015 also
– RandallTo
Nov 24 '15 at 17:29
This solution usually fixes it for me q...
What is the purpose of the : (colon) GNU Bash builtin?
...and that does nothing, being little more than a comment leader, but is actually a shell builtin in and of itself?
12 Answer...