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differentiate null=True, blank=True in django
When we add a database field in django we generally write:
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How to create id with AUTO_INCREMENT on Oracle?
It appears that there is no concept of AUTO_INCREMENT in Oracle, up until and including version 11g.
16 Answers
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Should flux stores, or actions (or both) touch external services?
Should the stores maintain their own state and have the ability to call network and data storage services in doing so ...in which case the actions are just dumb message passers,
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MySQL “WITH” clause
I'm trying to use MySQL to create a view with the "WITH" clause
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What is the behavior of integer division?
For example,
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Saving changes after table edit in SQL Server Management Studio
If I want to save any changes in a table, previously saved in SQL Server Management Studio (no data in table present) I get an error message:
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What is the point of a private pure virtual function?
I came across the following code in a header file:
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
I was looking for the fastest way to popcount large arrays of data. I encountered a very weird effect: Changing the loop variable from unsigned to uint64_t made the performance drop by 50% on my PC.
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SQL Server - stop or break execution of a SQL script
Is there a way to immediately stop execution of a SQL script in SQL server, like a "break" or "exit" command?
20 Answers
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How to “test” NoneType in python?
I have a method that sometimes returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if method, for example
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