参考:https://stackoverflow.com/questions/58550408/error-when-foreign-referencing-in-mysql-error-3780
这是由于两个表的table collation不同导致的.
修改表collation:
ALTER TABLE `basename`.`tablename` COLLATE=utf8_bin;
发现仍然不行,这是由于
1.修改数据库的collation,对修改后新建的表才会生效,已存在表不生效
2.修改表的 collation,对修改后新建的字段才会生效,已存在字段不生效
3.修改字段的 collation,对修改后新写入生效,同时对已存在的也生效
也就是说即使修改了表的collation,对现有column是不生效的,所以需要新建column
相关推荐
Table of Contents Preface, Notes, Licenses . . . . . . . . ....1. Licenses for Third-Party Components ....1.1. FindGTest.cmake License ....1.2. LPeg Library License ....1.3. LuaFileSystem Library License ....
触发器是与表有关的数据库对象,在对表进行insert/update/delete之前或之后,会触发并执行触发器中定义的SQL语句。触发器的这种特性可以协助应用在数据库端确保数据的完整性,记录日志,校验数据等。
Linear Referencing and Dynamic Segmentation in ArcGIS, 动态分段方面的资料,外文的.
另外一个简单介绍线性参考基本知识的PPT 理论与例子相结合~~ 对大家学习很有帮助~~
This is a guide to the Harvard author-date referencing system. It is based on the following manual: Commonwealth of Australia 2002, Style manual for authors, editors and printers, 6th edn, rev. by ...
一个介绍线性参考基本知识的PPT 理论与例子相结合~~ 对大家学习很有帮助~~
Similarly, the CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively. Evaluate the following CREATE TABLE command: CREATE TABLE...
Harvard Referencing这个版本相当的权威,有助于大家参考如何写reference
this is targetlink exercise files for model_referencing
文献查询及索引information searching and referencing
Referencing using the Harvard author-date 是科技工作者发表论文必须要掌握的要点,大名鼎鼎不多说了。
muRF 是一种突出显示文档的方法,以提供有关源质量的信息,与斜体强调的方式非常相似。 想想维基百科。 开发是 Firefox 插件和相关的服务器应用程序。
- CR#477115 / AR#31308 - Core PNAs packet in receipt when link goes down. - Core LCSBA implementation removes 64MB of possible addressing space. - Version fixed : v4.4 - CR#472992 / AR#30939 - ...
CHAPTER 1 Introduction to MySQL . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Database, ...
java运行依赖jar包
CommBase.dll when referencing the library in the development environment. CommBaseSourceCommBase.cs CommBaseSourceCommPingPong.cs CommbaseSourceAssemblyInfo.cs Source code for CommBase.dll ...
* Export Tables in Oracle format did not work when multiple tables were selected * File > Close All could cause an Access Violation * Window List function "Close all other Windows" could cause an ...
* Export Tables in Oracle format did not work when multiple tables were selected * File > Close All could cause an Access Violation * Window List function "Close all other Windows" could cause an ...
v2.1.0.0 New : RAD Studio XE4 support New : Full iOS support, including native access to SQLite ... Fixed : Access violation when loading package multiple times in TAureliusDataset design-time editor
1.1.3 Using the Singleton Pattern in Unity...........................5 1.1.4 Inheritance.................................................6 1.1.5 Where to Now?.............................................