rasql type management syntax

[Dimitar Misev]

We should consider whether the curly braces and comma in type definitions should be dropped, e.g. this example:

CREATE TYPE RGBImage
UNDER MARRAY {
RGBPixel
} , [*:* ,*:*]

would rather be:

CREATE TYPE RGBImage
UNDER MARRAY RGBPixel [*:* ,*:*]

We should check if they are optional in the SQL standard. We could make them optional in any case.

In the set type creation there is no comma to separate the null values clause:

CREATE TYPE typeName
UNDER SET {
marrayTypeName
} [ NULL VALUES spatialDomain ]