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This tutorial is designed for RPG/CL programmers looking to enhance their skills in Db2 SQL.
- Introduction to Db2 SQL: Overview of Db2 SQL, its importance in the IBM i environment, and how it integrates with RPG and CL programming.
- Basic SQL Syntax: Explanation of fundamental SQL commands such as SELECT, INSERT, UPDATE, and DELETE, with practical examples relevant to RPG/CL applications.
- Data Retrieval Techniques: Techniques for querying data, including filtering with WHERE clauses, sorting with ORDER BY, and using aggregate functions like COUNT, SUM, AVG.
- Joins and Subqueries: Understanding how to combine data from multiple tables using INNER JOIN, LEFT JOIN, and the use of subqueries to enhance data retrieval.
- Stored Procedures and Functions: Introduction to creating and using stored procedures and user-defined functions to encapsulate business logic and improve performance.
- Error Handling: Best practices for error handling in SQL, including the use of TRY...CATCH blocks and transaction management.
- Performance Tuning: Tips for optimizing SQL queries for better performance, including indexing strategies and analyzing query execution plans.
- Integration with RPG/CL: Practical examples of how to call SQL from RPG and CL programs, including embedded SQL and using SQL in service programs.
SOURCE: YouTube
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