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Troubleshooting “Illegal mix of collations” error in mysql
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This is generally caused by comparing two strings of incompatible collation or by attempting to select data of different collation into a combined column.
The clause COLLATE allows you to specify the collation used in the query.
For example, the following WHERE clause will ...
What is the difference between canonical name, simple name and class name in Java Class?
In Java, what is the difference between these:
8 Answers
8
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“Thinking in AngularJS” if I have a jQuery background? [closed]
Suppose I'm familiar with developing client-side applications in jQuery , but now I'd like to start using AngularJS . Can you describe the paradigm shift that is necessary? Here are a few questions that might help you frame an answer:
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Effects of changing Django's SECRET_KEY
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Edit: This answer is based on django 1.5
SECRET_KEY is used in a lot of various places, I'll point out what is impacted by it first and then try to go over that list and give precise explanation of the impact.
The list of things using SECRET_KEY directly or indirectly:
JSON object signing
cr...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
... is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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How to detect if a script is being sourced
I have a script where I do not want it to call exit if it's being sourced.
17 Answers
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What is the “FS”/“GS” register intended for?
So I know what the following registers and their uses are supposed to be:
5 Answers
5
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How to Implement DOM Data Binding in JavaScript
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How would binding work for objects?
How listening to change in the form might work?
An abstraction that updates both objects
I suppose there are other techniques, but ultimately I'd have an object that holds reference to a related DOM eleme...
How to use base class's constructors and assignment operator in C++?
I have a class B with a set of constructors and an assignment operator.
5 Answers
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...名，这些名称在任何数据库中都不建议使用中文。
与 TaifunSQLite 功能类似，但TaifunSQLite是收费的，美刀。
1.2版本更新（2025/09/15）
默认sqlite3
优化库导入导出方法
.aix 拓展下载：
cn.fun123.SQ...