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Retrieving the last record in each group - MySQL
There is a table messages that contains data as shown below:
27 Answers
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How to impose maxlength on textArea in HTML using JavaScript
...ise the browser will enforce the limit).
– Juha Palomäki
Jan 20 '13 at 23:16
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How to express a NOT IN query with ActiveRecord/Rails?
...p(&:id).join(','). I can't remember if Rails will the argument into a CSV list if it is enumerable.
You could also do this:
# in topic.rb
named_scope :not_in_forums, lambda { |forums| { :conditions => ['forum_id not in (?)', forums.select(&:id).join(',')] }
# in your controller
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What is the App_Data folder used for in Visual Studio?
...published through the web server.
For example we use it to update a local CSV of a contact us form. If the preferred method of emails fails or any querying of the data source is required, the App_Data files are there.
It's not ideal, but it it's a good fall-back.
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Can you configure log4net in code instead of using a config file?
... setting hierarchy.Configured = true;.
– Eivind Gussiås Løkseth
Apr 5 '17 at 14:49
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Make sure ...
“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing
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Save it as a CSV file and import it as a flat source file.
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How to rename files and folder in Amazon S3?
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What if i need to rename all .csv files. how come i do?
– LUZO
Mar 22 '18 at 14:21
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Changing all files' extensions in a folder with one command on Windows
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I had to use #1: ren "*.csv" "#1.json"
– elmalto
Jun 10 '15 at 15:39
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Get names of all keys in the collection
... The context show what is usefull: if data is normalized (ex. origen from CSV file), it is useful... For data imported from SQL is useful.
– Peter Krauss
Sep 22 '15 at 10:17
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How can you determine a point is between two other points on a line segment?
...intersect a line segment from a to b.
– Mikko Virkkilä
Oct 20 '15 at 13:35
@SuperFlux, I just tried running that, and...