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How do I get SUM function in MySQL to return '0' if no values are found?
...ven three tables (one with all numbers, one with all nulls, and one with a mixture):
SQL Fiddle
MySQL 5.5.32 Schema Setup:
CREATE TABLE foo
(
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
val INT
);
INSERT INTO foo (val) VALUES
(null),(1),(null),(2),(null),(3),(null),(4),(null),(5),(null)...
How to use SVN, Branch? Tag? Trunk?
...nformation that may be of interest:
Organizing the source code base when mixing two or more languages (like Java and C++)
Suggestions for a good commit message: format/guideline?
How often to commit changes to source control?
Learning Version Control, and learning it good
Regarding the basic Sub...
Where do the Python unit tests go?
...'s also just as easy to exclude tests from being distributed when they are mixed with the core folders; put this in the setup.py:
find_packages("src", exclude=["*.tests", "*.tests.*", "tests.*", "tests"])
If b:
You may wish — as every one of us do — that you are writing reusable libraries,...
Why does this async action hang?
...
This is the classic mixed-async deadlock scenario, as I describe on my blog. Jason described it well: by default, a "context" is saved at every await and used to continue the async method. This "context" is the current SynchronizationContext unl...
How do I vertically center UITextField Text?
...e trying to align (just numbers, just letters, just uppercase letters or a mix)
Placeholders
Clear button
What you're trying to align is important because of which point in the font should be vertically centered due to line height, ascenders, descenders etc.
(source: ilovetypography.com)
(Image ...
Are there any standard exit status codes in Linux?
...bits of the return code and 8 bits of the number of the killing signal are mixed into a single value on the return from wait(2) & co..
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <signal.h>
...
Store query result in a variable using in PL/pgSQL
...
PL/pgSQL allows mix of SQL and PL - and sometimes you can create really strange creatures, but is better mix PL and SQL cleanly - in isolated statements.
– Pavel Stehule
Sep 8 '12 at 18:54
...
git selective revert local changes from a file
...irectory, with the changes you want to keep committed on top.
git reset --mixed HEAD^
This removes the last commit ('tmp'), but keeps the modifications in your working directory, unstaged.
EDIT: replaced --soft with --mixed, to clean up the staging area.
...
How do you prevent IDisposable from spreading to all your classes?
...
This is basically what happens when you mix Composition or Aggregation with Disposable classes. As mentioned, the first way out would be to refactor the waitHandle out of shoelace.
Having said that, you can strip down the Disposable pattern considerably when you ...
Run php script as daemon process
...server/cron/app_sync.php 2>&1 > /var/log/app_sync.log'
KillMode=mixed
Restart=on-failure
RestartSec=42s
[Install]
WantedBy=default.target
If your PHP routine should be executed once in a cycle (like a diggest) you may should use a shell or bash script to be invoked into systemd servi...