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PostgreSQL query to return results as a comma separated list
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SELECT string_agg(id::text, ',') FROM table
Requires PostgreSQL 9.0 but that's not a problem.
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405 method not allowed Web API
...all of the solutions and non of them worked. I have disabled WebDAV publishing in control panel and added this to my web config file:
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Adding options to select with javascript
I want this javascript to create options from 12 to 100 in a select with id="mainSelect", because I do not want to create all of the option tags manually. Can you give me some pointers? Thanks
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Get users by name property using Firebase
I'm trying to create an application where I can get/set data in specific users accounts and I was tempted by Firebase.
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Add a new column to existing table in a migration
I can't figure out how to add a new column to my existing database table using the Laravel framework.
11 Answers
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MySQL, better to insert NULL or empty string?
...ifferent fields. Some of the fields are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
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How do I get the n-th level parent of an element in jQuery?
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Since parents() returns the ancestor elements ordered from the closest to the outer ones, you can chain it into eq():
$('#element').parents().eq(0); // "Father".
$('#element').parents().eq(2); // "Great-grandfather".
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NOT IN vs NOT EXISTS
...cution plans may be the same at the moment but if either column is altered in the future to allow NULLs the NOT IN version will need to do more work (even if no NULLs are actually present in the data) and the semantics of NOT IN if NULLs are present are unlikely to be the ones you want anyway.
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Ways to save enums in database
What is the best way to save enums into a database?
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How to open a second activity on click of button in android app
I am learning to build android applications and I need some specific help. I can't seem to get my head around which bits of template code I am required to change, and which bits are static.
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