PostGIS
Name
= — Returns `+TRUE+` if A's bounding box is the same as B's. Uses double precision bounding box.
Description
The = operator returns TRUE if the bounding box of raster A is
the same as the bounding box of raster B. PostgreSQL uses the =, <, and
> operators defined for rasters to perform internal orderings and
comparison of rasters (ie. in a GROUP BY or ORDER BY clause).
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Availability: 2.1.0