Programming VIP

Install deployment tools for OceanBase obdeploy OceanBase Deploy (OBD) is the installation and deployment tool of OceanBase open source software. OBD is also a package manager, which can be used to manage all open source software of OceanBase. In the following section, we manually compile the products of OceanBase, so OBD is needed for real de ...

Solemnly declare: This note is only prepared for the purpose of improving safety knowledge and sharing safety knowledge with more people. Do not use the technology in the note for illegal activities. The consequences caused by using the technology in the note have nothing to do with the author himself. We advocate that everyone is responsible f ...

1, Experimental time June 1, 2021 - June 30, 2021 2, Experimental preparation In the experiment, you need to buy an instance on Huawei cloud database, create a corresponding table, and import the corresponding data. The specific data is given in the teacher's Excel table. For the specific process of purchasing and building tables, please ...

14, SQL optimization tool 1. Slow query log MySQL's slow query log is a kind of log record provided by mysql. It is used to record the statements whose response time exceeds the threshold in MySQL. Specifically, it refers to the statements whose running time exceeds long_ query_ SQL with time value will be recorded in the slow query log. long_ ...

toc Transaction Actualities, Views, Triggers, and Stored Procedures at the Core of mysql A detailed analysis of mysql essential core knowledge transactions What is a transaction? A database transaction is usually an operation that reads or writes a database. The first is to provide a way for database operations to recover from failure to no ...

Sorted installation package Link: https://pan.baidu.com/s/1J8hVp-9p5yIMMc2jBUu5XA Extraction code: 123b 1, Introduction to LAMP 1. Concept of LAMP LAMP platform is a complete set of systems and related software for collaborative work. It can provide dynamic Wen site services and application development environment. It is the most matur ...

Access MySQL with Go The database/sql package of Go language provides a general interface to connect SQL databases or SQL like databases, but does not provide specific database drivers. When using it, at least one database driver must be injected. Implement basic CRUD 1. Create database and database tables Enter the database cmd through th ...

Title: human resource management system 1, E-R drawing design Create database: CREATE TABLE `person` ( `ID` char(8) NOT NULL, `PASSWD` varchar(16) NOT NULL, `AUTHORITY` varchar(8) NOT NULL, `NAME` varchar(8) NOT NULL, `SEX` varchar(2) NOT NULL, `BIRTHDAY` varchar(20) NOT NULL, `DEPARTMENT` varchar(20) NOT NULL, `JOB` varch ...

The project people's Congress Jincang database and Dameng database reported this error after druid was enabled. Hibernate: select extdetails0_.id as id1_102_, extdetails0_.createdby as createdb2_102_, extdetails0_.createdtime as createdt3_102_, extdetails0_.lastmodifiedby as lastmodi4_102_, extdetails0_.lastmodifiedtime as lastmodi5_102_, extd ...

Deploy mysql Cluster with M-M architecture The whole mysql5 7 database, and then do database master-slave synchronization, and then let the two database machines be master-slave to each other Environment: CentOS 7, mysql5 7 (the version of MySQL used as the master and slave of the database must be consistent) On the master database serv ...