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Why are Oracle table/column/index names limited to 30 characters?
... can be extremely painful when doing migration projects from SQL Server or MySQL to Oracle. In Oracle Database 12cR2, the maximum length of most identifiers is now 128 characters.
This is a new feature in 12.2, according to (http://blog.dbi-services.com/oracle-12cr2-long-identifiers/). According t...
How to do a LIKE query in Arel and Rails?
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Use .gsub(/[%_]/, '\\\\\0') for escaping MySql wildcard chars.
– aercolino
Aug 30 '13 at 10:58
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How to convert 1 to true or 0 to false upon model fetch
I have a model that is set with a JSON response from a mysql database. The model data is set with true or false into a boolean/tinyint field in the database, which uses 1 or 0 .
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What is SaaS, PaaS and IaaS? With examples
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A layer on top of IAAS
Runtimes (like java runtimes), Databases (like mySql, Oracle), Web Servers (tomcat etc)
SAAS (Software As A Service) :
A layer on top on PAAS
Applications like email (Gmail, Yahoo mail etc), Social Networking sites (Facebook etc)
To quickly relate consider the belo...
What is the difference between buffer and cache memory in Linux?
...g lots of I/O will use lots of memory for buffers. I'm bulkloading a 100GB MySQL/InnoDB database and buffers go above 2GB all the time.
– Marcelo Pacheco
Mar 17 at 3:15
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DateTime.Now vs. DateTime.UtcNow
...t know UtcNow has better performance and that simply saving your dates in mysql and assuming that is utc and comparing date dependent displays with UtcNow simplifies this global timezone issues
– Diin
May 14 '19 at 16:48
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GCM with PHP (Google Cloud Messaging)
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Android Push Notifications using Google Cloud Messaging (GCM), PHP and MySQL
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Why should you use an ORM? [closed]
...that the use-case is fairly limited. I have never really used anything but MySql and sqlite for about a decade. I think it's probably a very rare requirement for most developers.
– troelskn
Dec 29 '09 at 12:44
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How to install packages offline?
...7:10 Jinja2-2.6.tar.gz
-rw-r--r-- 1 pavel staff 70305 Apr 11 00:28 MySQL-python-1.2.3.tar.gz
-rw-r--r-- 1 pavel staff 2597214 Apr 10 18:26 SQLAlchemy-0.7.6.tar.gz
-rw-r--r-- 1 pavel staff 1108056 Feb 22 17:10 Werkzeug-0.8.2.tar.gz
-rw-r--r-- 1 pavel staff 488207 Apr 10 18:...
Doctrine and composite unique keys
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