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MySQL DISTINCT on a GROUP_CONCAT()

I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table . Sample data below: 6 Answers ...
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Method to Add new or update existing item in Dictionary

In some legacy code i have see the following extension method to facilitate adding a new key-value item or updating the value, if the key already exists. ...
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Android: create a popup that has multiple selection options

I've been searching around trying to figure out how to create a popup or a dialog that has 4 options to choose from. 4 Answ...
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Find rows with multiple duplicate fields with Active Record, Rails & Postgres

What is the best way to find records with duplicate values across multiple columns using Postgres, and Activerecord? 5 Answ...
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Android: When is onCreateOptionsMenu called during Activity lifecycle?

I put a couple of breakpoints in onCreate (one at the beginning, and one at the end of the method), and I also put one at the beginning of onCreateOptionsMenu . The onCreate method is called first, and before it finishes onCreateOptionsMenu is called. ...
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Is it possible to execute code once before all tests run?

Basically I would like to tell MSTest to execute a bit of code before launching into a series of test runs, essentially what I would like to do is the same thing as sticking some code in Main() . ...
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RegEx to make sure that the string contains at least one lower case char, upper case char, digit and

What is the regex to make sure that a given string contains at least one character from each of the following categories. ...
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HTTP Basic Authentication credentials passed in URL and encryption

I have a question about HTTPS and HTTP Authentication credentials. 3 Answers 3 ...
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How do I get the user agent with Flask?

I'm trying to get access to the user agent with Flask, but I either can't find the documentation on it, or it doesn't tell me. ...
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How to redirect a url in NGINX

I need to redirect every http://test.com request to http://www.test.com . How can this be done. 4 Answers ...