Programming VIP

For MySQL version 5.7, you can use the sys.session view to view the last SQL executed by the session: SELECT * FROM sys.session WHERE CONN_ID = 20036 \G The sys.session view is associated with sys.processlist, and sys.processlist uses `performance_schema'. `events_statements_current'. If you want to query the SQL situation that a ses ...

# Set Lambda expression Language: Suitable for server development: JAVA.net PHT c++, c ASP golang python... Front end: ios android H5 jsp... Database: MySQL Oracle BD2 Hbase MonggoDB redis, SQL sever... Big data: hadoop flume spark hive yarn zonokeeprer kafka sqoop,HDFS mr,scala... Lambda expression ...

Reprinted from the excellent articles of Nanke Meng Brothers: https://www.cnblogs.com/dongying/p/4142476.html 1. SqlSession Factory and SqlSession. Through the introduction and use of mybatis in the previous chapters, we can all appreciate the importance of SqlSession. Yes, on the surface, we all u ...

Background and Analysis When the MySQL container starts up, it automatically creates some necessary databases, such as MySQL, which is the official default. However, in practice, we also need to let MySQL create our own custom database automatically. This paper explores the application occasion. The ...

In this article, we will read the source code of Mybatis in depth, hoping that we can not be so afraid of the underlying framework in the future, and learn the good ideas of framework design; Architectural principles Architecture diagram Architectural flow chart The two pictures above are from the internet, but they are very good. They basi ...

MySQL is a commonly used relational database. This paper introduces how to operate MySQL database in go language. Go Manipulates MySQL Connect The database/sql package in Go language provides a wide range of interfaces to guarantee SQL or quasi-SQL databases, and does not provide specific database drivers. A database driver must be injected wh ...

Using metaclasses type() The biggest difference between dynamic and static languages is the definition of functions and classes, which is not defined at compile time, but created dynamically at run time. For example, if we want to define a Hello class, we write a hello.py module: class Hello(object): ...

Django model layer (2) multi-table operation Create a model Relationships between tables and tables One-to-one, many-to-one, many-to-many # The information commonly used in the author's table is placed in this table. class Author(models.Model): name=models.CharField(max_length=32) age=models.IntegerField() authorDetail=models.OneToO ...

Original Link: http://www.cnblogs.com/OpsMgr/archive/2011/04/15/2017037.html ManagementPack can be seen as an extension package that extends SCOM functionality, importing the appropriate MP can monitor things that need to be monitored, ...

Original Link: http://www.cnblogs.com/jellochen/p/the-extension-of-linq.html This article describes LINQ extensions in three ways: extended query operators, custom query operators, and simple simulation of LINQ to SQL. 1. Extended Query ...