大约有 11,600 项符合查询结果(耗时:0.0247秒) [XML]
Count with IF condition in MySQL query
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Use sum() in place of count()
Try below:
SELECT
ccc_news . * ,
SUM(if(ccc_news_comments.id = 'approved', 1, 0)) AS comments
FROM
ccc_news
LEFT JOIN
ccc_news_comments
ON
ccc_news_comments.news_id = ccc_news.news_id
WHERE
`ccc_...
What's the proper way to install pip, virtualenv, and distribute for Python?
...hat bootstrap environment to create more!
Here is an example in bash:
# Select current version of virtualenv:
VERSION=12.0.7
# Name your first "bootstrap" environment:
INITIAL_ENV=bootstrap
# Set to whatever python interpreter you want for your first environment:
PYTHON=$(which python)
URL_BASE=h...
How to disassemble one single function using objdump?
...g=1;next}/^[[:xdigit:]]+ <.*>:$/{flag=0}flag'
adapted from: How to select lines between two marker patterns which may occur multiple times with awk/sed
Mailing list replies
There is a 2010 thread on the mailing list which says it is not possible: https://sourceware.org/ml/binutils/2010-04/...
How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
...
For merge, it runs a SELECT query. Otherwise, it checks the id and the version.
– Vlad Mihalcea
Sep 4 at 3:46
add a comme...
What is the cleanest way to disable CSS transition effects temporarily?
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Should probably select both ".notransition" and ".notransition *" to be fully effective.
– Nathan
Dec 27 '14 at 6:56
...
What is NSZombie?
...ment. Instead of "Run" to start the app, use "Profile" and an instrument selector will come up. Select "Zombie", and the app will start running - do whatever causes your crash, an a dialog will pop up saying "Zombie Messaged".
From there, click the small arrow in the dialog box. That will take ...
MySQL Creating tables with Foreign Keys giving errno: 150
...h a value in the Parent table PK column(s). Check this with a query like:
SELECT COUNT(*) FROM Child LEFT OUTER JOIN Parent ON Child.FK = Parent.PK
WHERE Parent.PK IS NULL;
This must return zero (0) unmatched values. Obviously, this query is an generic example; you must substitute your table nam...
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
...sing Firefox. You can export it by hitting the URL in the browser and then select the option to export the certificate. Let's assume the cert file name is your.ssl.server.name.crt
Go to your JRE_HOME/bin or JDK/JRE/bin
Type the command
keytool -keystore ..\lib\security\cacerts -import -alias your.s...
How to set the value to a cell in Google Sheets using Apps Script?
... var cell = sheet.getRange("B2");
cell.setValue(100);
}
You can also select a cell using row and column numbers.
var cell = sheet.getRange(2, 3); // here cell is C2
It's also possible to set value of multiple cells at once.
var values = [
["2.000", "1,000,000", "$2.99"]
];
var range = s...
Open file via SSH and Sudo with Emacs
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I had some troubles with the selected answer. However, it worked when I added this line to .emacs:
(add-to-list 'tramp-default-proxies-alist '(".*" "\\`root\\'" "/ssh:%h:"))
And then executed the following:
/sudo:ssh-host:file-on-ssh-host
It was sl...
