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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
TimeSeries Data User's GuideThe HCL OneDB™ TimeSeries Data User's Guide contains information to assist you in using the TimeSeries extension with HCL OneDB™.
Time series API routinesThe time series application programming interface routines allow application programmers to directly access a time series datum.
The TS_ELEM_NULL macro

The TS_ELEM_NULL macro

The TS_ELEM_NULL macro determines whether the STATUS indicator returned by ts_elem(), ts_nth_elem(), ts_first_elem(), or a similar function is NULL because the associated element is NULL.

Syntax

TS_ELEM_NULL((mi_integer) STATUS)

STATUS: The mi_integer argument previously passed to ts_elem(), ts_nth_elem(), ts_first_elem(), or a similar function.

Description

This macro returns a nonzero value if the associated element is NULL. This macro is often used in concert with TS_ELEM_HIDDEN.

Returns

A nonzero value if the element returned by ts_elem(), ts_nth_elem(), ts_first_elem(), or similar function was NULL.