Personally, plpgSQL is only useful to those who are coming from Oracle. People are more likely to be comfortable with plPython or plPerl than plpgSQL.
Well that was not true for my, I started using postgres and plpgsql not because I knew Oracle ( I don't know it ).
plpgsql is more close to postgres then plPython or plPerl, and after all is nearest SQL then plPtyhton or plPerl so a DBA find it more confortable then others languages.
my two cents.
Regards Gaetano Mendola
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