巧用Linux管道，让MySQL执行大量脚本文件
在工作中碰到这样的需求，要mysql执行大量脚本来更新数据库。查了mysql的source命令，只能执行一个脚本文件。我试了source /sqkd
在工作中碰到这样的需求，要mysql执行大量脚本来更新数据库。查了mysql的source命令，只能执行一个脚本文件。我试了source /sqkdir/*.sql；不行。mysql不能把*.sql作为文件名通配符来处理。后来请教了别人，，找到了办法。利用Linux管道,执行如下命令：
cat /sqldir/*.sql | mysql -u username -p
这样就实现了让mysql执行大量脚本文件。
原理是这样的，cat会把所有的文件链接起来输出到缺省输出，然后用管道把这些文件输出到mysql，mysql将这些文件作为输入，会执行其中的脚本。
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