2014-09-15 19:49 GMT+02:00 cowwoc <cow...@bbs.darktech.org>: > Hi Pavel, > > On 15/09/2014 1:40 PM, Pavel Stehule wrote: > > The main drivers are: > >> >> 1. Not having to learn yet another language. I find the >> expressiveness and readability of the other scripting languages very >> clunky >> compared to Java. >> >> > PLpgSQL is different, it is based on Ada language > > > I'm sure it's a very lovely language, but it is yet another language most > people are not familiar with and will have to learn. >
you need one day learning only .. it contains only necessary functionality for stored procedures, nothing more. It is like Java in 90 years - just simple > > >> 1. Ease of porting triggers across databases. The only thing that >> really changes across databases is how triggers interact with input/output >> parameters. The main body remains the same (thanks to JDBC). This is quasi >> portability in the sense that the underlying SQL is itself quasi portable, >> but I find it a much more compelling approach than having to rewrite the >> triggers for each database type. >> >> any time plpgsql will be faster then Java probably due a type > compatibility with Postgres and execution as inprocess > > There is a few task, that can be done in database, that will be faster > in PL/Java than PL/pgSQL > > > I think developers choosing this route (myself included) are willing to > pay the price in exchange for improved readability/maintainability (the > assumption being that the resulting performance will be "good enough"). > There seem to be plenty of people heading in this direction otherwise other > languages (like pl/v8) wouldn't enjoy the popularity they do. > I know a situation in Czech Republic well and in Europe little bit My estimation is about PostgreSQL applications 95% applications is wrote without stored procedures 4% applications is wrote with PL/pgSQL .9% is combination PL/pgSQL with PL/Perl or PL/Python (Perl is older with CPAN, Python is popular in GIS community) 0.01% has all other .. pl/v8 was used mainly for JSON manipulation, because this possibility was not in PG, PL/R, PL/Lua, PL/PHP, PL/v8 has very small user community For typical Java or Javascript users the stored procedures are devil still. > > Gili >
