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Cannot change column used in a foreign key constraint
...S person (person_id);
UNLOCK TABLES;
EDIT:
Added locks above, thanks to comments
You have to disallow writing to the database while you do this,
otherwise you risk data integrity problems.
I've added a write lock above
All writing queries in any other session than your own ( INSERT, UPDA...
npm - install dependencies for a package in a different folder?
... BTW, it creates empty etc folder in destination, it's a known bug github.com/npm/npm/pull/7249
– Mikhail Radionov
Oct 28 '15 at 9:03
...
CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...位M）、一级缓存目录数量、二级缓存目录数量
logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh //log文件日志格式
access_log /var/log/squid/access.log combined //log文件存放路径和日志格式
cache_lo...
What is a memory fence?
...ect. For example a 'full fence' means all read/writes before the fence are comitted before those after the fence.
Note memory fences are a hardware concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemented using memory fences at the low le...
What do the return values of node.js process.memoryUsage() stand for?
...e of the Heap
heapUsed: Heap actually Used
Ref: http://apmblog.dynatrace.com/2015/11/04/understanding-garbage-collection-and-hunting-memory-leaks-in-node-js/
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Making a triangle shape using xml definitions?
...encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<rotate
android:fromDegrees="45"
android:toDegrees="45"
android:pivotX="-40%"
android:pivotY="87%" >
<sha...
Razor ViewEngine: How do I escape the “@” symbol?
... @Tien see the last HTML character code here worked for me: stackoverflow.com/a/13584640/84206
– AaronLS
Dec 27 '12 at 20:53
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Fast Bitmap Blur For Android SDK
...ere is a discussion on the meaning of the argument "filter": stackoverflow.com/questions/2895065
– user1364368
Dec 26 '13 at 19:28
4
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Secret copy to clipboard JavaScript function in Chrome and Firefox?
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Combine :after with :hover
I want to combine :after with :hover in CSS (or any other pseudo selector). I basically have a list and the item with the selected class has an arrow shape applied using :after . I want the same to be true for objects that are being hovered over but cant quite get it to work. Heres the cod...