不熟悉SQL和关系数据库的过程开发人员/程序员不需要任何正式的培训，也不需要了解如何使用SQL，快速阅读SQL For Dummies之类的东西就足以使用像Oracle和SQL Server这样的关系数据库。

在处理存储在关系数据库(如Oracle和SQL Server)中的数据的应用程序中，许多错误往往是由于缺乏对关系数据库语言的理解或如何使用造成的;SQL。

I used to work for a software vendor who had the mentality that all a developer needed was the SQL For Dummies book or something similiar and they would be fully equipped to handle any relational database issue. Now that the clients of this vendor have databases measuring in hundreds of gigabytes this lack of SQL knowledge is coming back around in a negative way. It's not just bad performing lookups and or updates and inserts that are a problem but the actual design of the database itself that is the real obstacle.

如果当时开发主管能够像对待他们构建应用程序所用的语言那样对待SQL和关系数据库，那么所有这些都是可以避免的，而且成本也会低得多。

不要认为SQL不重要，因为它最终会回来困扰你。你可能可以在一段时间内摆脱它，甚至几年，但你最终会达到一个断点，在没有完全重新设计数据库的情况下，你无法继续前进，那是成本最高的时候。

我在计算机科学课程中所学的Karnaugh地图在编程中永远找不到实际用途。

这真的很尴尬，但当我开始学习如何编程时，没有什么能让我满意。我想写电子游戏。而不是这些书里让我写的那些琐碎的小程序。所以我决定跳过10章，忽略基础知识。

所以我基本上忽略了变量!

问题是我没有从惯例中识别关键字:

Car car = new Car(); //good
Car test = new Car(); //wrong must be lowercase car!

for (int i = 0; i < 10; i++) //good
for (int test = 0; test < 10; test++)//wrong must be i

我这样做了一年多，甚至用3000行字做了一个井字游戏! 当时我为自己的厉害而激动不已，直到我在互联网上找到了150行一字棋。然后意识到自己是个白痴，就重新开始。

不要使用高级的特定于实现的特性，因为你可能“有时”想要切换实现。我这样做了一次又一次，几乎无一例外地，这种转换从未发生过。

我一直认为，任何为任何语言编写任何代码的人都会使用编辑程序。

I was working with a client of mine who had me on mostly as support and to write some of the more complex things for him. Well one day he messed up a file, big time. He accidentally saved over three hours worth of his own work, and when I asked him why he didn't save more often he replied with, "because I wasn't done". Naturally, this was not an acceptable answer, and I poked and prodded a little further. I eventually came to find out that he he has never used any editing program, EVER! Not even notepad.exe! He had been using an online CPanel editor for files! It didn't even have a 'Find' function. He couldn't ever save until he was done because he was editing the live file on the site!

不用说，我很惊讶，他至今仍在使用CPanel编辑器……

作为我编写的代码的所有者，我是唯一应该理解或接触它的人。