大约有 7,000 项符合查询结果（耗时：0.0273秒） [XML]
GROUP_CONCAT ORDER BY
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@aleroot, Is this query MySQL specific?
– Pacerier
Apr 30 '15 at 20:24
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Error 1022 - Can't write; duplicate key in table
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I thought MySQL Workbench would have fixed this when exporting the creation script, but that's what I get for "Ignore"ing the warning about this sort of thing when I opened the project.
– SnowInferno
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How to deal with SQL column names that look like SQL keywords?
... What about: select TableName.from from TableName; PS: It works in MySQL
– Rudolf Real
Sep 10 '12 at 15:09
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MySQL select with CONCAT condition
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Can you attach Amazon EBS to multiple instances?
We currently use multiple webservers accessing one mysql server and fileserver. Looking at moving to the cloud, can I use this same setup and attach the EBS to multiple machine instances or what's another solution?
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Is asynchronous jdbc call possible?
... busy/blocked per concurrent request.
If the underlying database drivers (MySql?) offers a means to intercept the socket creation (see SocketFactory) then I imagine it would be possible to build an async event driven database layer on top of the JDBC api but we'd have to encapsulate the whole JDBC ...
传感器组件 · App Inventor 2 中文网
...步骤是看起来涉及向前运动的步骤。
方法
复位()
重置计步器、距离测量和跑步时间。
保存()
将计步器状态保存至手机。允许累积步数和调用使用计步器的应用程序之间的距离。不同的应用程序将有自己的保存状态。
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Should Gemfile.lock be included in .gitignore?
...ee CRM.
My preference is postgres, but we want the default database to be mysql2.
In this case, Gemfile.lock still needs be checked in with the default set of gems, but I need to ignore changes that I have made to it on my machine. To accomplish this, I run:
git update-index --assume-unchanged G...
How do I get a raw, compiled SQL query from a SQLAlchemy expression?
...o %s or other variables waiting to be bound by the statement compiler or MySQLdb dialect engine, etc).
12 Answers
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Master-master vs master-slave database architecture?
...uture. I came across
Master-Slave Replication
Master-Master Replication
MySQL Cluster
I have decided to settle for using MySQL Cluster for my use case. However please see below for the various pros and cons that I have compiled
1. Master-Slave Replication
Pros
Analytic applications can rea...