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Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...（我还要去维护宇宙和平的好嘛）。
这篇文章讲的就是如何解决分布式系统的日志管理问题。先给大家看看最终的效果：
单个屏幕上所有服务器的日志实时滚动着显示。每条日志开头还标明日志的来源（下图）。
实现这...
How do I see all foreign keys to a table or column?
In MySQL, how do I get a list of all foreign key constraints pointing to a particular table? a particular column? This is the same thing as this Oracle question , but for MySQL.
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What's the recommended way to connect to MySQL from Go?
I am looking for a reliable solution to connect to a MySQL database from Go. I've seen some libraries around but it is difficult to determine the different states of completeness and current maintenance. I don't have complicated needs, but I'd like to know what people are relying on, or what's the m...
ERROR: Error 1005: Can't create table (errno: 121)
I have troubles with forward engineering my MySQL database into WAMP server..
I was going to post an image of the schema but as this is my first post I can't.
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Maximum number of records in a MySQL database table
What is the upper limit of records for MySQL database table. I'm wondering about autoincrement field. What would happen if I add milions of records? How to handle this kind of situations?
Thx!
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Should I use the datetime or timestamp data type in MySQL?
...ld you recommend using a datetime or a timestamp field, and why (using MySQL)?
39 Answers
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mysql -> insert into tbl (select from another table) and some default values [duplicate]
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With MySQL if you are inserting into a table that has a auto increment primary key and you want to use a built-in MySQL function such as NOW() then you can do something like this:
INSERT INTO course_payment
SELECT NULL, order_id...
Throw an error in a MySQL trigger
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As of MySQL 5.5, you can use the SIGNAL syntax to throw an exception:
signal sqlstate '45000' set message_text = 'My Error Message';
State 45000 is a generic state representing "unhandled user-defined exception".
Here is a mo...
MySQL get the date n days ago as a timestamp
In MySQL, how would I get a timestamp from, say 30 days ago?
3 Answers
3
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SQL: deleting tables with prefix
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You cannot do it with just a single MySQL command, however you can use MySQL to construct the statement for you:
In the MySQL shell or through PHPMyAdmin, use the following query
SELECT CONCAT( 'DROP TABLE ', GROUP_CONCAT(table_name) , ';' )
AS statement...