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Return 0 if field is null in MySQL

In MySQL, is there a way to set the "total" fields to zero if they are NULL? 5 Answers ...
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SQL query for finding records where count > 1

I have a table named PAYMENT . Within this table I have a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number. ...
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Difference between exit(0) and exit(1) in Python

What's the difference between exit(0) and exit(1) in Python? 5 Answers 5 ...
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Is it a good idea to index datetime field in mysql?

I am working on designing a large database. In my application I will have many rows for example I currently have one table with 4 million records. Most of my queries use datetime clause to select data. Is it a good idea to index datetime fields in mysql database? ...
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List submodules in a Git repository

I have a Git repository that has several submodules in it. How do I list the names of all the submodules after git submodule init has been run? ...
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What is the most efficient way to store tags in a database?

... - what is the most effective way to store tags so that they may be searched and filtered? 7 Answers ...
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ASP.NET MVC JsonResult Date Format

...e a controller action that effectively simply returns a JsonResult of my model. So, in my method I have something like the following: ...
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Hex representation of a color with alpha channel?

Is there a W3 or any other noteworthy standard on how to represent a color (including alpha channel) in hex format? 5 Answe...
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How to download/checkout a project from Google Code in Windows?

How do I download a ZIP file of an entire project from Google Code when there are no prepared downloads available? 6 Answe...
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How can I check if a key is pressed during the click event with jQuery?

I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event. ...