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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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Django connection to PostgreSQL: “Peer authentication failed”
...I am receiving when I try to get to my Django admin site. I had been using MySQL database no problem. I am new to PostgreSQL, but decided to switch because the host I ultimately plan to use for this project does not have MySQL.
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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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技术人员如何创业《一》—— 产品及想法 - 资讯 - 清泛网 - 专注C/C++及内核技术
技术人员如何创业《一》—— 产品及想法不得不说这是个浮躁的社会，人人在这个社会都想暴富或者成名。在这些引诱的驱使下很多人都脱离了原来的稳定工作创业。前几天看了《中国合伙...不得不说这是个浮躁的社会，人人...
iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...iTunes的后果是，插上iPhone无反应，不识别。
4、网上学习如何在XCode中写一个HelloWorld，并在iOS 5.0的模拟器中运行成功后，开始真机调试过程。
首先，iPhone需要越狱，非越狱机器此处未研究如何在无IDP账号的情况下，真机调...
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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数据挖掘——分词入门 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...了解数据挖掘的目的：发现数据中价值。这个才是关键，如何发现数据中的价值。那什么是数据呢？比如大家要上网首先需要输入网址，打开网页后会自动判断哪些是图片、哪些是新闻、哪些是用户名称、游戏图标等。人大脑可...
华为公司的新产品研发流程管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...以企业的研发环节为例，技术纷繁复杂，更新变幻莫测，如何决策?如何投资?如何预算控制、...引言：高效率和高质量似乎永远是一对解不开的矛盾。以企业的研发环节为例，技术纷繁复杂，更新变幻莫测，如何决策?如何投资?...
mysql Foreign key constraint is incorrectly formed error
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mysql error texts doesn't help so much, in my case, the column had "not null" constraint, so the "on delete set null" was not allowed
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