External Procedures, Triggers, and User-Defined Functions on IBM DB2 for i

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User-defined functions

This chapter describes the advantages of developing user-defined functions (UDFs) on IBM DB2 for i as the facility to create scalar or table functions that are similar to other system-supplied functions that are used in SQL statements.

This chapter describes the following topics:

•Introduction

•Nature of user-defined functions

•Type of user-defined functions

•Creating user-defined functions

•Resolving a UDF

•System catalog tables

•Authorization and adopted authority

•Transaction management considerations

•Coding considerations ...

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