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PolarDB:ST_NumBands

Last Updated:Mar 28, 2026

Returns the number of bands in a raster object.

Syntax

integer ST_NumBands(raster raster_obj);

Parameters

ParameterDescription
raster_objThe raster object to query.

Return value

Returns an integer representing the total number of bands in the raster object.

Examples

select ST_NumBands(raster_obj) from raster_table;

Expected output:

3