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MySQL Multiple Joins in one query?
... dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename
FROM dashboard_data
INNER JOIN dashboard_messages
ON dashboard_message_id = dashboard_messages.id
INNER JOIN images
ON dashboard_messages.image_id = images.image_id
However be ...
SQL Server indexes - ascending or descending, what difference does it make?
...y Optimiser's point of view.
For the table definition
CREATE TABLE T1( [ID] [int] IDENTITY NOT NULL,
[Filler] [char](8000) NULL,
PRIMARY KEY CLUSTERED ([ID] ASC))
The Query
SELECT TOP 10 *
FROM T1
ORDER BY ID DESC
Uses an ordered scan with scan direction BAC...
What's the fastest way to read a text file line-by-line?
I want to read a text file line by line. I wanted to know if I'm doing it as efficiently as possible within the .NET C# scope of things.
...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
...ormal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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Keep file in a Git repo, but don't track changes
I have several files in a CodeIgniter site that I will want to have in the repo but not track any changes on.
6 Answers
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mvn clean install vs. deploy vs. release
...the clean phase and then the install phase sequentially:
clean: removes files generated at build-time in a project's directory (target by default)
install: installs the package into the local repository, for use as a dependency in other projects locally.
mvn deploy
This command invokes the...
Read entire file in Scala?
What's a simple and canonical way to read an entire file into memory in Scala? (Ideally, with control over character encoding.)
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Which version of the git file will be finally used: LOCAL, BASE or REMOTE?
...lison during git merge , I open a mergetool called Meld . It opens three files LOCAL, BASE and REMOTE. As I've read LOCAL is my local branch, BASE is common ancestor and REMOTE is the branch to be merged.
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RAII and smart pointers in C++
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A simple (and perhaps overused) example of RAII is a File class. Without RAII, the code might look something like this:
File file("/path/to/file");
// Do stuff with file
file.close();
In other words, we must make sure that we close the file once we've finished with it. This ...
How do I get the path and name of the file that is currently executing?
I have scripts calling other script files but I need to get the filepath of the file that is currently running within the process.
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