Preface
Mappings
Mapplets
Mapping Parameters
Where to Assign Parameters
Mapping Outputs
Generate a Mapping from an SQL Query
Dynamic Mappings
How to Develop and Run a Dynamic Mapping
Dynamic Mapping Use Cases
- Use Case: Dynamic Mapping for Metadata Changes in Relational Sources
- Use Case: Reuse Dynamic Mapping for Different Sources and Targets
Mapping Administration
Import From PowerCenter
Performance Tuning
Pushdown Optimization
Partitioned Mappings
Developer Tool Naming Conventions

Developer Mapping Guide

10.2.2
- 10.5.4
- 10.5
- 10.4.1
- 10.4.0
- 10.2.1

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SQL Syntax to Generate a Mapping

You can use an ANSI-compliant SQL statement to generate a mapping in the Developer tool.

The Developer tool can generate a mapping from a standard SELECT query. For example:

SELECT column_list FROM table-name 
[WHERE clause]
[GROUP BY clause]
[HAVING clause]
[ORDER BY clause]

If the SELECT SQL statement contains a correlated subquery, the query is valid if it is possible to flatten or rewrite the query as a single standard query.

ANSI SQL does not support some datatypes. For example, if the query requests results from a data source where one of the columns has the type timeStampTZ, the SQL is not valid.

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Table of Contents

Developer Mapping Guide

Developer Mapping Guide

SQL Syntax to Generate a Mapping

SQL Syntax to Generate a Mapping