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Don't say much, just get to the point! 1. Click File to create a new Module 2. Click and select Spring, then check Spring on the right (when checking Spring, we will prompt you to create spring-config.xml, here we check it for convenience), Web Application, St ...

1.x version of hive does not provide the function of similar stored procedure. When using Hive for data development, it usually encapsulates a paragraph of HQL statements in Shell or other scripts, and then calls them by command line to complete the statistical analysis of a business or a report. The go ...

Preface To be honest, this chapter was not meant to talk about, because there are many similar tutorials on the Internet that configure multiple data sources. But recently, because the project uses sub-database and sub-table, let me study how to achieve it. I think about the last blog about multi-environment configuration, different environment ...

about Sometimes, with the development of business, the data sources associated with the project will become more and more complex, and the database used will be more dispersed. At this time, multi-data sources will be used to obtain data. In add ...

Original Link: https://my.oschina.net/u/2400661/blog/596249 Original: http://www.cnblogs.com/xiaoluo501395377/p/3376256.html -------------------------------------------------------- ...

To learn a knowledge point, the first thing is to check the official documents: https://docs.spring.io/spring-boot/docs/2.1.6.RELEASE/reference/htmlsingle/#boot-features-sql Spr-boot chooses HikariCP (known as the fastest and most powerful) as the d ...

Source code for this article: GitHub. Click here || GitEE. Click here 1. Spring Framework 1. Introduction to Framework Spring is an open source framework. One of the main advantages of this framework is its hierarchical architecture, which allows users to choose which component to use and provides an integrated framework for J2EE application d ...

1. Problem Description input Table Name of an Arbitrary Data Table What page is it? Number of entries per page output JSON array string for this table (each row of data corresponds to a JSON object) application When the client (Web or mobil ...

Links to the original text: https://www.cnblogs.com/luoxn28/p/6417892.html Catalog Configuration of MyBatis Major Members of MyBatis Initialization of MyBatis MyBatis's SQL Query Process MyBatis Cache MyBatis is an excellent persi ...

This series is a record and share of the course "Java Mainstream Technology Stack SSM+SpringBoot Shop System". 1. Why learn java Now it's the front end, I've always wanted to be a full stack, I've learned background languages like node and python, and I've written a few small projects like egg Django that can also be used, but I find ...