Background documentationName of a Database Function (dbfunction_name) Locate this document in the navigation structure

 

A database function name (dbfunction_name) identifies a database function. Database functions are specialized database procedures. These are subprograms consisting of any number of input characters but one output parameter only. This returns the result of the function.

Structure

Syntax Syntax

  1. <dbfunction_name> ::=
  [<schema_name>.]<identifier>
End of the code.

Neither the schema name nor the identifier can be longer than 32 characters.

Examples

SQL Tutorial, Database Functions

Explanation

You can define user-specific functions to transfer application logic to the server of the database system. You can use these database functions like the predefined functions. When naming your functions, make sure you do not use the names of predefined functions (Functions: Overview).

The database system provides a language (special SQL syntax that has been extended to include variables, control structures, and troubleshooting measures) that allows an SQL access layer to be formulated on the server side. This special SQL syntax can be used to define database functions. These database functions can then be executed as function calls of an SQL statement (database function call).

More Information

CREATE FUNCTION Statement

Database Function Call (dbfunction_call)

DROP FUNCTION Statement