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Oracle “Partition By” Keyword
Can someone please explain what the partition by keyword does and give a simple example of it in action, as well as why one would want to use it? I have a SQL query written by someone else and I'm trying to figure out what it does.
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Convert column classes in data.table
I have a problem using data.table: How do I convert column classes? Here is a simple example: With data.frame I don't have a problem converting it, with data.table I just don't know how:
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Best way to use multiple SSH private keys on one client
...nt servers or different portions of the same server (my uses are system administration of server, administration of Git, and normal Git usage within the same server). I tried simply stacking the keys in the id_rsa files to no avail.
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Copying files from host to Docker container
I am trying to build a backup and restore solution for the Docker containers that we work with.
41 Answers
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Jenkins Host key verification failed
I have a problem with jenkins , setting "git", shows the following error:
13 Answers
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MySql Table Insert if not exist otherwise update
It works if the datenum exists, but I want to insert this data as a new row if the datenum does not exist.
3 Answers
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Adding parameter to ng-click function inside ng-repeat doesn't seem to work
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Instead of
<button ng-click="removeTask({{task.id}})">remove</button>
do this:
<button ng-click="removeTask(task.id)">remove</button>
Please see this fiddle:
http://jsfiddle.net/JSWorld/Hp4W7/3...
Linq to Sql: Multiple left outer joins
I'm having some trouble figuring out how to use more than one left outer join using LINQ to SQL. I understand how to use one left outer join. I'm using VB.NET. Below is my SQL syntax.
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Restful way for deleting a bunch of items
In wiki article for REST
it is indicated that if you use http://example.com/resources DELETE, that means you are deleting the entire collection.
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How to easily initialize a list of Tuples?
I love tuples . They allow you to quickly group relevant information together without having to write a struct or class for it. This is very useful while refactoring very localized code.
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