You should have experience with:
• coding and executing basic SQL statements.
These skills can be developed by attending
• SQL Workshop (CE120GB), or equivalent experience.
Delegates will learn how to
• Use some of the OLAP features of DB2, such as GROUPing and RANKing functions
• Create tables, views and indexes
• Use referential integrity, check constraints and triggers
• Use outer joins, and join tables to themselves
• Use CASE expressions, and the CAST function
• Identify the impact of Summary Tables, Materialized Query Tables, and temporary tables
• Use complex subqueries
• Use a greater number of scalar SQL functions
• Use advanced SQL constructs, such as recursive SQL and table expressions
• Define User-Defined Distinct Types and User-Defined Functions
• Avoid several of the most common causes for poorly-performing SQL
• Identify the purpose of the clauses in the SELECT statement
• Describe the key differences among the IBM DB2 platforms
• Describe and use some of the OLAP features of DB2, such as GROUPING functions like CUBE and ROLLUP, and the RANK, DENSE_RANK and ROW_NUMBER functions
• Code statements to: Create tables and views, Alter tables, Create indexes, Implement referential integrity (RI), and Define triggers and check constraints
• Identify impacts and advantages of referential integrity, including impacts of delete rules
• Identify considerations when using triggers and check constraints
• Define and make use of INSTEAD OF triggers
• Retrieve data from more than one table via inner and outer joins
• Use outer joins (LEFT, RIGHT, FULL)
• Use ANTI JOINS
• Join a table to itself
• Use UNION and UNION ALL
• Use EXCEPT and INTERCEPT
CASE, CAST, Summary Tables, and Materialized Query Tables
• Identify when CASE expressions can be used
• Code CASE expressions in SELECT list and in the WHERE clause
• Identify when CAST specifications can be used
• Identify the advantages of using Summary (Materialized Query) Tables and Temporary tables
• Identify the advantages of using Materialized Query Tables (MQTs)
o Identify when and how to use Temporary tables
• Code subqueries using the ALL, ANY/SOME, and EXISTS keywords
• Code correlated subqueries
• Choose the proper type of subquery to use in each case
• Extend your knowledge of scalar functions which: Manipulate arithmetic data, Manipulate date values, and Manipulate character data
• Examples of scalar functions that are addressed in this course:
Table Expressions and Recursive SQL
• Identify reasons for using table expressions and recursive SQL
• Use nested and common table expressions
• Identify the difference between views and table expressions
• Code recursive SQL
• Control the depth of recursion when coding recursive SQL
UDTs/UDFs and Performance
• Describe the concepts behind User-Defined Types, User-Defined Functions and Stored Procedures
• Predict when queries will use indexes to get better performance
• Identify concepts of predicate processing
• State introductory concepts about index structure
• State general best practices advice
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