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Unique constraint that allows empty values in MySQL
I have a field that stores product codes. The codes are unique, but some products simply doesn't have a code. I can't invent codes because those are providers codes.
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Remove a folder from git tracking
I need to exclude a folder (name uploads) from tracking. I tried to run
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Bootstrap 3 and Youtube in Modal
I'm trying to use the Modal feature from Bootstrap 3 to show my Youtube video. It works, but I can't click on any buttons in the Youtube video.
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Select DISTINCT individual columns in django?
I'm curious if there's any way to do a query in Django that's not a " SELECT * FROM... " underneath. I'm trying to do a " SELECT DISTINCT columnName FROM ... " instead.
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What are the rules for evaluation order in Java?
I am reading some Java text and got the following code:
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TypeScript or JavaScript type casting
How does one handle type casting in TypeScript or Javascript?
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Static member initialization in a class template
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Closing JDBC Connections in Pool
Our standard code section for using JDBC is...
3 Answers
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runOnUiThread in fragment
I'm trying to convert an Activity to fragment. The error mark on runOnUiThread .
on the past:
6 Answers
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rails 3 validation on uniqueness on multiple attributes
I use Rails 3.0.0.beta4
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