Introduction - If you have any usage issues, please Google them yourself
The book features: introduces SQL syntax rules and the actual development of the application, and SQL in MySQL, MS SQL Server, Oracle and DB2 in an analysis of the differences details on the database by adding, changing, check, etc. SQL support and the corresponding SQL Application a thorough analysis of functions, subqueries, table connected to a different DBMS difference in SQL syntax, SQL tuning, NULL value handling, services, advanced technology, such as window function by the actual case of a detailed analysis of the development process so that readers grasp the comprehensive application of skills in SQL.