记得常回头看看以前犯的错误，但绝不要为它们感到后悔。
Remember to look back upon your mistakes from time to time, but never regret them.
即使程序需要每一列，最好根据sql语句中的名称来显式地寻找每一列，以便增加清晰度和避免以前犯的错误。
Even if the program needs every column, it is better to ask for each column explicitly by name in the SQL statement for clarity and to avoid the previous pitfall.
实际上，您可能犯的很多错误以前就已经存在了。
In truth, many of the mistakes that you're likely to make have been made before.
事实上，本专栏将集中讨论如何避免以前出现的常见错误，这样您就不会犯同样的错误。
In fact, this column will concentrate on how to avoid common past mistakes so that you won't make the same ones.
没有一些历史知识，哲学家永远不会进步：他们将一直犯相同的错误，意识不到那些错误以前都犯过了。
Without some knowledge of history philosophers would never progress: they would keep making the same mistakes, unaware that they had been made before.
这个天使不再会犯跟以前同样的错误。
计算机是一种在人类历史上所有发明中，可以让你比以前更快地犯更多的错误的发明，同样，其也包括了“手枪”和“龙舌兰酒”这两种发明的缺陷。
A computer lets you make more mistakes faster than any other invention in human history, with the possible exceptions of handguns and tequila.
计算机是一种在人类历史上所有发明中，可以让你比以前更快地犯更多的错误的发明，同样，其也包括了“手枪”和“龙舌兰酒”这两种发明的缺陷。
A computer lets you make more mistakes faster than any other invention in human history, with the possible exceptions of handguns and tequila.
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