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Client APIs and toolsYou can use the HCL OneDB™ implementation of client APIs to develop applications for HCL OneDB™ database servers.
HCL OneDB™ ODBC Driver GuideThe HCL OneDB™ ODBC Driver Programmer's Manual serves as a user guide and reference for HCL OneDB™ ODBC Driver, which is the HCL OneDB™ implementation of the Microsoft™ Open Database Connectivity (ODBC) interface, Version 3.0.
Client functionsThese topics describe the HCL OneDB™ ODBC Driver client functions. Use these functions to access and manipulate smart large objects and rows and collections.
Functions for rows and collectionsThis section describes each client function that HCL OneDB™ ODBC Driver provides for rows and collections.
The ifx_rc_isnull() functionThe ifx_rc_isnull() function returns a value that indicates whether a row or collection is null.

The ifx_rc_isnull() function

The ifx_rc_isnull() function returns a value that indicates whether a row or collection is null.

Syntax

ifx_rc_isnull(nullflag, rchandle)

The function accepts the following arguments.


Argument	Type	Use	Description
nullflag	SQL_SMALLINT	Output	Flag that indicates whether a row or collection is null. The possible values are: TRUE FALSE
rchandle	HINFX_RC	Input	Handle for a row or collection buffer

The ifx_rc_isnull() function returns a value that indicates whether a row or collection is null.