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How can I brew link a specific version?
...Usage: brew switch <formula> <version>
Example:
brew switch mysql 5.5.29
You can find the versions installed on your system with info.
brew info mysql
And to see the available versions to install, you can provide a dud version number, as brew will helpfully respond with the avail...
Reason for Column is invalid in the select list because it is not contained in either an aggregate f
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@davidblaine, MySQL has a function GROUP_CONCAT() for that. dev.mysql.com/doc/refman/5.5/en/… But in standard SQL, each column should contain only one value. That's fundamental to relational theory too.
– Bill Kar...
NPM cannot install dependencies - Attempt to unlock something which hasn't been locked
...t the problem was. My ".npm" folder in my home directory was owned by the root user instead of myself. I'm not sure what happened to cause that. Maybe I installed node or npm as the root admin at one point. In any case I just ran sudo chown -R [username] .npm and I was finally able to run npm in...
【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...、主观题（四选二）
1、最近大数据非常的火热，而请问如何利用大数据与搜索引擎结合，为用户提供更好的产品或服务。
大致答案构成：将大数据分为几个类型，向不同的用户提供不同的类型组合构成新的产品或者服务。
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大数据时代的数据化运营 - 资讯 - 清泛网 - 专注C/C++及内核技术
...响。今天我们采访到了中清龙图副总裁李翀为广大cp讲解如何在大数据时代进行数据运营。
什么是大数据？
大数据第一个特点是数据量特别大，举个例子，比如一个人站在这里，仅知道他的身高体重等等，是没有什么实际意义...
Unknown Column In Where Clause
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See the following MySQL manual page: http://dev.mysql.com/doc/refman/5.0/en/select.html
"A select_expr can be given an alias
using AS alias_name. The alias is used
as the expression's column name and
can be used in GROUP BY, ORDER BY...
致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
...落的“过来人”，还是想写点东西给“年轻人”。
关于如何成长？
我直白的答案还是建议通过实践，通过项目来成长。虽然提倡多参加项目，但项目不能是乱七八糟的项目什么都去尝试做，对于刚工作的同学，希望做这两类...
mysql command for showing current configuration variables
Can not find a command that displays the current configuration of mysql from within the database.
3 Answers
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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一组返回的是基本信息，另一组返回的是扩展信息。
1、如何判断CPU是否支持CPUID指令
前面说过，大概是从80486开始才有的cpuid这个指令，是不是所有的80486家族CPU都有这个指令我也不是很清楚，但在EFLAGS中的bit 21可以识别CPU...
What is the difference between single and double quotes in SQL?
...ct_id
SELECT PRODUCT.id 'product_id'
Either works in Oracle, SQL Server, MySQL… but I know some have said that the TOAD IDE seems to give some grief when using the single quotes approach.
You do have to use single quotes when the column alias includes a space character, e.g., product id, but it...