DELETE_ DROP_ Research on record content of truncate command in binlog of ROW format

Today, a question suddenly comes to mind. Is the DELETE, DROP, TRUNCATE command the same as the binlog in ROW format? It's not the same to remember vaguely, but it's not sure; so let's take a look at the experiment. MySQL:5.6.20MySQL:5.7.22 1. View binlog settings mysql> show variables like 'binlog_format'; +---------------+-------+ | Vari ...

Posted by rharter on Wed, 20 May 2020 08:33:53 -0700

C#Data Operations Series - 10 NHibernate Trial

0. Preface In the last article, you basically completed the introductory tutorial for EF Core.Starting with this article, we'll try to explore more ORM frameworks on the.net core platform.So let's start with NHibernate. 1. Introduction to NHibernate NHibernate is the C#version of Hibernate, known as the pillar of ORM in Java (at least once).Hib ...

Posted by Josh18657 on Tue, 19 May 2020 18:04:34 -0700

Using Nginx to record and display the TOP 20 Web interface with slow response

I believe that many small partners have seen the response time and real-time display function of url interface in some commercial products. It can be understood that the slow query of web interface and the slow query of sql have the same magic, but if you want to do it, you have no way to start and don't know how to realize this function, so to ...

Posted by Jak on Mon, 18 May 2020 23:19:14 -0700

Integrating sharding JDBC to realize data desensitization in JPA project

introduction In the previous blog post, the database desensitization scenario and scheme have been completely introduced. The sharding JDBC open source project from Jingdong Digital Technology Co., Ltd. has realized this function transparently through the way of data source intermediate agent. However, although the function has been realized, ...

Posted by rocksolidsr on Mon, 18 May 2020 20:31:28 -0700

[java framework] JPA -- JPA mapping relationship

1. One way one to many configuration One way one to many is configured with the @ OneToMany tag. One party has a Set attribute associated with multiple parties. A Set can be a List or a Set, but the difference is that a List is ordered and a Set is not repeated. Corresponding to the configuration of @ OneToMany on one side: /** * One way one ...

Posted by scott.stephan on Mon, 18 May 2020 10:53:00 -0700

MyBatis Series Talking about SQL Execution Process Analysis

Catalog Use Mybatis on its own Mybatis Execution Process SqlSessionFactory\SqlSession MapperProxy Excutor Use Mybatis on its own This article focuses on analyzing the Mybatis framework's processes for executing SQL. Recalling that we used the Mybatis semi-automation framework on our own, we needed to follow t ...

Posted by BradZynda on Fri, 15 May 2020 17:17:44 -0700

Empire cms loads more implementations (both parent and child columns can be implemented)

1, <div class="pagelist"> <span id="loadmore" class="btn" style="display: block;">Load more</span> </div> Find the button to load more and set the id (preferably id, which is easier to traverse). 2, <ul id="showajaxnews" style="opacity: 1; top: 0px;"> [!--empirenews.listtemp--]<!--list.var ...

Posted by php_man555 on Thu, 14 May 2020 07:33:19 -0700

sql server data definition common sql

catalog Create tableUpdate tableDelete tableQuery table structureCreate view Create table Create table TestSql CREATE TABLE TestSql( Id bigint identity(1,1) not null PRIMARY key ) reference material SQL CREATE TABLE statementSQL PRIMARY KEY constraint Update table Create field Create a normal field --ALTER TABLE table_name ADD co ...

Posted by snapy on Tue, 12 May 2020 07:29:42 -0700

Stored Procedures for MySQL

Stored procedures are an important feature of database storage. Stored procedures were not supported by MySQL prior to version 5.0. Stored procedures can greatly improve the processing speed of the database and the flexibility of database programming.1. What is a stored procedure?Stored procedures are a collection of SQL statements that are de ...

Posted by sm on Sun, 10 May 2020 10:17:41 -0700

Statistics of ASP.NET simple hot words

1, Function introduction The user enters a character in the search box to associate hot words that begin with that character in a week.   2, Functional design: 1. Hot words list Insert a piece of data each time you search   CREATE TABLE [dbo].[SearchDetails]( [Id] [uniqueidentifier] NOT NULL,--ID [KeyWords] [nvarchar](255) NOT NULL,--S ...

Posted by maheshbaba on Sat, 09 May 2020 07:10:29 -0700