SQL@Wiki 

一篇文章，掌握所有开源数据库的现状 - AI前线

• https://mp.weixin.qq.com/s?__biz=MzU1NDA4NjU2MA==&mid=2247486485&idx=1&sn=d874ff7d57fc8c7ea594c946811c0859&source=41#wechat_redirect

数据库两个神器索引和锁 - 数据库开发

• https://mp.weixin.qq.com/s/oIzMlR3i7kdRTc3Wvuskiw
• 一、索引
  • 1.1聊聊索引的基础知识
  • 1.2索引提高检索速度
  • 1.3索引降低增删改的速度
  • 1.4哈希索引
  • 1.5InnoDB支持哈希索引吗？
  • 1.6聚集和非聚集索引
  • 1.7索引最左匹配原则
  • 1.8=、in自动优化顺序
  • 1.9索引总结
  • 二、锁
  • 2.1为什么需要学习数据库锁知识
  • 2.2表锁简单介绍
  • 2.2行锁细讲
    • 2.2.1MVCC和事务的隔离级别
  • 2.3乐观锁和悲观锁
    • 2.3.1悲观锁
    • 2.3.2乐观锁
  • 2.4间隙锁GAP
  • 2.5死锁
  • 2.6锁总结
• 三、总结

---

Delete (SQL)@Wiki

Insert (SQL)@Wiki

in和exists的区别与SQL执行效率分析

DB2 基础: 在 DB2 Universal Database 中创建第一个触发器

• https://www.ibm.com/developerworks/cn/data/library/techarticles/0308bhogal/0308bhogal.html

DB2 Locking and Concurrency for Java Developers

• https://www.mcpressonline.com/programming-other/java/db2-locking-and-concurrency-for-java-developers

Dimension (data warehouse) - Wikipedia

• https://en.wikipedia.org/wiki/Dimension_(data_warehouse)#Dimension_table

Execute Dynamic SQL commands in SQL Server

• https://www.mssqltips.com/sqlservertip/1160/execute-dynamic-sql-commands-in-sql-server/

Database index - Wikipedia

• https://en.wikipedia.org/wiki/Database_index#Bitmap_index

power designer_百度百科

• https://baike.baidu.com/item/power%20designer/2482290?fromtitle=PowerDesigner&fromid=5408320

SELECT INTO 和 INSERT INTO SELECT 两种表复制语句 - 陈晨 - 博客园

• http://www.cnblogs.com/freshman0216/archive/2008/08/15/1268316.html

sql 语句中commit的作用_百度知道

• https://zhidao.baidu.com/question/219723307.html

SQL：char、varchar、text和nchar、nvarchar、ntext的区别 - Yes!加菲猫 - 博客园

• http://www.cnblogs.com/TomToDo/archive/2008/05/27/1208496.html

sprintf_百度百科

• https://baike.baidu.com/item/sprintf?fr=aladdin

update select - 通心菜 - 博客园

• http://www.cnblogs.com/jcgh/archive/2010/10/19/1855446.html

Difference between Open SQL and Native SQL | ABAP | STechies

• https://www.stechies.com/what-is-difference-between-open-sql-native-sql/