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setting multiple column using one update
How to set multiple columns of a table using update query in mysql?
2 Answers
2
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When to use a key/value store such as Redis instead/along side of a SQL database?
.... I did recently
for one gps tracking system which was previously built on mysql as a
database.
ADVANTAGE
Every time the tracker broadcast data I do not need to open mysql connection and store on it. We can save it on redis and later migrate
to mysql using some other process. This will avoid conc...
django urls without a trailing slash do not redirect
...IA_URL.lstrip('/'),
'django.views.static.serve',
kwargs={'document_root': settings.MEDIA_ROOT}),
MEDIA_URL was empty, so this pattern matched everything.
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Passing references to pointers in C++
... to a pointer to make all the pointers in a deleted binary tree except the root safe. To make the pointer safe we just have to set it to 0. I could not make the function that deletes the tree (keeping only the root) to accept a ref to a pointer since I am using the root (this pointer) as the first i...
DistutilsOptionError: must supply either home or prefix/exec-prefix — not both
...pip operations.
All you have to do is to create a setup.cfg file at the root directory of your project, usually where your main __init__.py or executable py file is. So if the root folder of your project is: /path/to/my/project/, create a setup.cfg file in there and put the magic words inside:
...
SQLAlchemy default DateTime
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@JeffWidman: Do we have a mysql implementation for utcnow? I in documentation only mssql and postreg
– JavaSa
Nov 29 '17 at 15:13
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Environment variables for java installation
...iles(x86)'
Notice that these environment variables are derived from the "root" environment variable JAVA_HOME. This makes it easy to update your environment variables when updating the JDK. Just point JAVA_HOME to the fresh installation.
There is a blogpost explaining the rationale behind all the...
How can I transform string to UTF-8 in C#?
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If you want to save any string to mysql database do this:->
Your database field structure i phpmyadmin [ or any other control panel] should set to utf8-gerneral-ci
2) you should change your string [Ex. textbox1.text] to byte, therefor
2-1) define byte[]...
How to read embedded resource text file
...example, if you embed a text file named "MyFile.txt" that is placed in the root of a project with default namespace "MyCompany.MyProduct", then resourceName is "MyCompany.MyProduct.MyFile.txt".
You can get a list of all resources in an assembly using the Assembly.GetManifestResourceNames Method.
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Creating a daemon in Linux
...e permissions */
umask(0);
/* Change the working directory to the root directory */
/* or another appropriated directory */
chdir("/");
/* Close all open file descriptors */
int x;
for (x = sysconf(_SC_OPEN_MAX); x>=0; x--)
{
close (x);
}
/* Open...