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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.
Spatial Data User's GuideThe HCL OneDB™ Spatial Data User's Guide contains information to assist you in using the HCL® OneDB® spatial extension. The HCL® OneDB® spatial extension adds custom data types and supporting routines to the server.
Spatial functionsUse specific spatial data type functions to perform operations on spatial data.
The ST_MaxM() and ST_MinM() functions

The ST_MaxM() and ST_MinM() functions

The ST_MaxM() and ST_MinM() functions return the maximum and minimum measure values of a geometry.

Syntax

ST_MaxM(ST_Geometry)

ST_MinM(ST_Geometry)

Return type

DOUBLE PRECISION

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