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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
SQL statementsThis chapter describes the syntax and semantics of SQL statements that are recognized by HCL OneDB™.
CREATE FUNCTION statementUse the CREATE FUNCTION statement to create a user-defined function, to register an external function, or to write and register an SPL function.
External Functions
Example of Registering a UDR Written in the Java™ Language

Example of Registering a UDR Written in the Java Language

The following CREATE FUNCTION statement registers the user-defined function, sql_explosive_reaction( ). This function is discussed in sqlj.install_jar.

CREATE FUNCTION sql_explosive_reaction(INT) RETURNS INT WITH (class="jvp")
   EXTERNAL NAME "course_jar:Chemistry.explosiveReaction" LANGUAGE JAVA;

This function returns a single INTEGER value. The EXTERNAL NAME clause specifies that the Java™ implementation of the sql_explosive_reaction( ) function is a method called explosiveReaction( ), which resides in the Chemistry Java class that resides in the course_jar JAR file.

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