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How can I avoid running ActiveRecord callbacks?
...without resorting to additional gems, adding conditional checks, using RAW SQL, or futzing with your exiting code 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...
“The page you are requesting cannot be served because of the extension configuration.” error message
...his is much easier - similar change to installing WIF. Now they should add SQL to Turn Windows Features On/Off.
– nocarrier
Apr 4 '14 at 0:52
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How to ssh to vagrant without actually running “vagrant ssh”?
...ick if you need the host of your vagrant for ssh for other reasons, like a SQL GUI connection, such as Sequel Pro. This one save me!
– Atomox
Apr 6 '16 at 23:27
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How to drop a PostgreSQL database if there are active connections to it?
I need to write a script that will drop a PostgreSQL database. There may be a lot of connections to it, but the script should ignore that.
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Reset Entity-Framework Migrations
... In my case, the suggested command in this answer resulted in SQL errors.
– Justin Skiles
Jun 28 '14 at 22:39
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How to add multiple columns to a table in Postgres?
How do I add multiple columns in one query statement in PostgreSQL using pgadmin3?
2 Answers
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PHP method chaining?
...thing that should be done after collecting all elements. Like executing an SQL query here - but beware, you could do multiple chained calls on one object! Firt and last in each.
– Andris
Apr 4 '18 at 22:45
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MySQL COUNT DISTINCT
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I love SQL because you get questions like "How do I count distinct user IDs" and the answer is just "Count(Distinct user_id)"
– Tim
Nov 13 '18 at 15:29
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Create or write/append in text file
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Oh, yes there will be, in this case use a SQL database, it has a built-in engine to avoid race-conditions. But that's a whole new question.
– Valentin Mercier
Jul 26 '14 at 15:45
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How can I turn a List of Lists into a List in Java 8?
...))
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.collect(Collectors.toList())
This is would be similar in SQL to having SELECT statements within SELECT statements.
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