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MySQL主从服务器数据一致性的核对与修复 - 数据库(内核) - 清泛网 - 专注C/...
...的错误信息，那么恭喜你中招了：
mysql> SHOW SLAVE STATUS\G
Last_Errno: 1062
Last_Error: Error 'Duplicate entry '...' for key ...' on query.
为啥会出现唯一索引键值重复？最大的可能是错误的对从服务器做了写操作！出现此类错误的时候，很多...
SQL command to display history of queries
... history in my MYSQL Query Browser. What is the sql statement for displaying history?
7 Answers
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How do I delete an exported environment variable?
Before installing gnuplot, I set the environment variable GNUPLOT_DRIVER_DIR = /home/gnuplot/build/src . During the installation, something went wrong.
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How do I tidy up an HTML file's indentation in VI?
How do I fix the indentation of his huge html files which was all messed up?
11 Answers
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How does the “this” keyword work?
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I recommend reading Mike West's article Scope in JavaScript (mirror) first. It is an excellent, friendly introduction to the concepts of this and scope chains in JavaScript.
Once you start getting used to this, the rules are actually pretty si...
Using Emacs to recursively find and replace in text files not already open
As a follow-up to this question , it's trying to find out how to do something like this which should be easy, that especially stops me from getting more used to using Emacs and instead starting up the editor I'm already familiar with. I use the example here fairly often in editing multiple files.
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How to develop a soft keyboard for Android? [closed]
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Some tips:
Read this tutorial: Creating an Input Method
clone this repo: LatinIME
About your questions:
An inputMethod is basically an Android Service, so yes, you can do HTTP and all the stuff you can do in a Service.
You can open Activities and dialogs from...
How to make a great R reproducible example
When discussing performance with colleagues, teaching, sending a bug report or searching for guidance on mailing lists and here on Stack Overflow, a reproducible example is often asked and always helpful.
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How is the undo tree used in Vim?
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See also :h undo-redo, which lists all the commands and their usage.
There are two ways to traverse the undo tree. One is to go "back in time". g+ and g- will traverse all of the nodes in the tree in chronological or reverse-chronological order (which can be a bit confusing, because i...
Wrapping synchronous code into asynchronous call
...on, that consumes quite a lot of time to complete. A call to this method might occur up to 3 times during one user request, depending on the cache state and parameters that user provides. Each call takes about 1-2 seconds to complete. The method itself is synchronous call to the service and there is...