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Database development mistakes made by application developers [closed]
... exists--you should be using it.
It's quite common to see this failure on MySQL databases. I don't believe MyISAM supports it. InnoDB does. You'll find people who are using MyISAM or those that are using InnoDB but aren't using it anyway.
More here:
How important are constraints like NOT NULL...
一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...不知加载哪个,于是manifest文件来指明。
manifest在哪儿,如何创建。
如果用VS开发,可以Set通过porperty->configuration properties->linker->manifest file->Generate manifest To Yes来自动创建manifest来指定系统的和CRT的assembly版本。
除了这样产生外...
c/c++如何判断指针无效?如NULL,0xcccccccc,0xfeeefeee,野指针等 - C/C++ -...
c/c++如何判断指针无效?如NULL,0xcccccccc,0xfeeefeee,野指针等c c++如何判断指针无效?不仅仅是NULL的判断,有时由于指针释放没有赋NULL,指针会变成野指针或诸如0xcccccccc,0xfeeefeee形式的无效指针,...c/c++如何判断指针无效?不仅仅是N...
Windows下如何调试NPAPI Plugins - 更多技术 - 清泛网 - 专注C/C++及内核技术
Windows下如何调试NPAPI Plugins关于NPAPI的介绍及开发方法请参考“开发”栏目下相关博文,这里主要讲述一下如何调试NPAPI Plugins,环境为Win7 + VS 2008。一、如何查看Plugins是否加载成功
Firefox和Chrome在浏览器地址栏输入 about:plugins,...
iOS开发如何提高 - 更多技术 - 清泛网 - 专注C/C++及内核技术
iOS开发如何提高许多人在博客和微信上咨询我iOS开发如何提高,经过一番思考之后,我能想到如下一些提高的办法,我个人也是通过这些方法来提高的。阅读博客...许多人在博客和微信上咨询我iOS开发如何提高,经过一番思考之...
You can't specify target table for update in FROM clause
I have a simple mysql table:
11 Answers
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Error 1022 - Can't write; duplicate key in table
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I thought MySQL Workbench would have fixed this when exporting the creation script, but that's what I get for "Ignore"ing the warning about this sort of thing when I opened the project.
– SnowInferno
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Drop multiple tables in one shot in mysql
...m in the correct order, nor whether they actually exist.
N.B. this is for MySQL only (as in the question). Other databases likely have different methods for doing this.
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Is there a naming convention for MySQL?
...e your standard, then run with it.
To answer your question outright - no, MySQL doesn't have a preferred naming convention/standard, so rolling your own is fine (and yours seems logical).
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What is SQL injection? [duplicate]
...d queries, or applying your language/toolkit's escaping functions (such as mysql_real_escape_string() in PHP).
Once you understand SQL Injection you'll get the joke behind this cartoon.
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