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

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

Another function could be size, for getting the size in bytes of an array. Often arrays are only partially materialized, so this would be useful information.