Enable getting rasdaman version in a select query

[Dimitar Misev]

PostgreSQL has SELECT VERSION(), would be good to have this in rasdaman too.

Besides the version, in postgres also the gcc version that was used to compile is printed, which is also very useful info.

petascopedb=# select version();
                                                  version                                                   
------------------------------------------------------------------------------------------------------------
 PostgreSQL 9.1.6 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2, 64-bit
(1 row)

[Dimitar Misev]

In rasql we'd have something like this with the patch:

$ rasql -q 'select version()' --out string
rasql: rasdaman query tool v1.0, rasdaman v9.0.0beta1-g46356fc -- generated on 15.11.2013 11:15:52.
opening database RASBASE at localhost:7001...ok
Executing retrieval query...ok
Query result collection has 1 element(s):
  Result object 1: rasdaman v9.0.0beta1-g46356fc on x86_64-linux-gnu, compiled by gcc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2
rasql done.

[Dimitar Misev]

Implemented in changeset:fc2eca215d1257528a606ef1b17655cee40d58fb

I change to Peter, as it should be documented in the manual I believe.

[Peter Baumann]

done (QL Guide, Section 9.12), so closing.