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How to create index on JSON field in Postgres?
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Found:
CREATE TABLE publishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the lat...
How to print HTML content on click of a button, but not the page? [duplicate]
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I came across another elegant solution for this:
Place your printable part inside a div with an id like this:
<div id="printableArea">
<h1>Print me</h1>
</div>
<input type="button" onclick="printDiv('printableArea')" value="print a div!" />
Now let'...
Adding a favicon to a static HTML page
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Usage Syntax: .ico, .gif, .png, .svg
This table shows how to use the favicon in major browsers. The standard implementation uses a link element with a rel attribute in the section of the document to specify the file format and file name and location.
Note that most...
How do I do top 1 in Oracle?
...inal query doesn't have an ORDER BY, nor does it return all columns in the table.
– OMG Ponies
Aug 12 '10 at 15:37
I s...
ORDER BY the IN value list
...ed.
We don't need a subquery, we can use the set-returning function like a table.
A string literal to hand in the array instead of an ARRAY constructor may be easier to implement with some clients.
Detailed explanation:
PostgreSQL unnest() with element number
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How to reset a form using jQuery with .reset() method
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I've finally solve the problem!!
@RobG was right about the form tag and table tag. the form tag should be placed outside the table. with that,
<td><input type="reset" id="configreset" value="Reset"></td>
works without the need of jquery or anything else. simple click on the ...
Detecting which UIButton was pressed in a UITableView
I have a UITableView with 5 UITableViewCells . Each cell contains a UIButton which is set up as follows:
26 Answers
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Is there common street addresses database design for all addresses of the world? [closed]
...ction of all possible addresses will be stored, its better to use a single table (or flat format) containing all fields and one address per row.
A reasonable format for storing addresses would be as follows:
Address Lines 1-4
Locality
Region
Postcode (or zipcode)
Country
Address lines 1-4 can hold...
How can I avoid running ActiveRecord callbacks?
... in any way, consider using a "shadow object" pointing to your existing db table. Like so:
class ImportedPerson < ActiveRecord::Base
self.table_name = 'people'
end
This works with every version of Rails, is threadsafe, and completely eliminates all validations and callbacks with no modificat...
How to check if a process is running via a batch script
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Changing the tasklist format to CSV or anything but table is important because it tasklist default layout (table) truncates long image names which breaks the logic.
– Scott White
Jun 22 '11 at 14:56
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