Getting information about arrays

[Dimitar Misev]

A function which returns information about an array in the database would be very useful. The information we can extract right now is limited to:

• array dimensionality and extents
• array type by specifying --type to rasql

Further info that would be highly useful:

• tiling scheme and configuration, number of tiles
• the index used
• storage format
• size in bytes of an array; often arrays are only partially materialized, so this would be useful information.

This could be implemented as an info function, which similarly to RAS_COLLECTIONNAMES returns a char array with the above (and possibly further) information.