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Check if a Postgres JSON array contains a string
...rom t where x @> '2';. Note that '2' is a JSON number; don't be mislead by the quotes.
– Snowball
Nov 16 '18 at 4:26
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How to design a database for User Defined Fields?
...F. The same holds true for the related indices.
You also get a speed boost by limiting the amount of data that has to be processed for aggregations or other transformations. Splitting the data out into multiple tables lets you perform some of the aggregating and other statistical analysis on the UDF...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
...ze list
From the API:
Arrays.asList: Returns a fixed-size list backed by the specified array.
You can't add to it; you can't remove from it. You can't structurally modify the List.
Fix
Create a LinkedList, which supports faster remove.
List<String> list = new LinkedList<String>...
Can you explain the HttpURLConnection connection process?
...nection with the URL object - A new
// connection is opened every time by calling the openConnection
// method of the protocol handler for this URL.
// 1. This is the point where the connection is opened.
HttpURLConnection connection = (HttpURLConnection) url
.openConnect...
The “unexpected ++” error in jslint [duplicate]
...new value of j, resulting in 1 being alerted.
This could easily be solved by doing
var i = 0, j = 0;
alert((i++) +j);
Now this cannot be mistaken.
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This app won't run unless you update Google Play Services (via Bazaar)
...ng an existing emulator then you might need to uninstall previous versions by:
adb uninstall com.android.vending
adb uninstall com.google.android.gms
That's all.
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Bootstrap 3 and 4 .container-fluid with grid adding unwanted padding
... and the same will be removed when you add a .row class as a child element by the negative margin set on row.
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Creating temporary files in Android
...
Every app uses it's own cache: By default, files saved to the internal storage are private to your application and other applications cannot access them (nor can the user). If you'd like to cache some data, you should use getCacheDir() to open a File wher...
SQL Server Restore Error - Access is Denied
...ready exists (because you've already restored it previously) and is in use by SQL Server
or
b) that directory doesn't exist at all
In your question, you mentioned you created a backup for that table - that's not how SQL Server backups work. Those backups are always the whole database (or at least...
Rails 3.1 and Image Assets
...rs in sass: image_url, image_path,... More can be found here: edgeguides.rubyonrails.org/asset_pipeline.html No need to use erb as a preprocessor anymore
– Martin Wawrusch
Aug 13 '11 at 7:29
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