Language PostgreSQL
Date: | 04/20/05 |
Author: | David Eddyshaw |
URL: | n/a |
Comments: | 0 |
Info: | n/a |
Score: | (2.83 in 18 votes) |
-- PostgreSQL Version of "99 Bottles of Beer". -- by David Eddyshaw, david@jeddyshaw.freeserve.co.uk -- Uncomment the C-style comments if the database -- you're using doesn't include PL/pgSQL: it's -- wanted for the shelf-stacking function fill(). -- See http://www.postgresql.org/ \set QUIET \pset format unaligned /* create function plpgsql_call_handler() returns opaque as '/usr/lib/pgsql/plpgsql.so' -- path depends on your setup language 'C'; create trusted procedural language 'plpgsql' handler plpgsql_call_handler lancompiler 'PL/pgSQL'; */ create table Bottles (rownum integer); create function fill() returns text as 'begin for i in 1 .. 100 loop insert into Bottles values (i); end loop; return ''Filled the shelf.''; end;' language 'plpgsql'; select fill(); create function bob(integer) returns text as 'select case when $1 = 1 then ''1 bottle of beer'' when $1 = 0 then ''No more bottles of beer'' else $1 || '' bottles of beer'' end as result' language 'sql'; \pset title '\n99 Bottles of Beer.\n' select bob(100-rownum)||' on the wall,\n'|| bob(100-rownum)||';\nTake one down and pass it around:\n'|| bob(99-rownum) ||' on the wall.\n' as sing from Bottles where rownum < 100; -- Be tidy: clean up /* drop procedural language 'plpgsql'; drop function plpgsql_call_handler(); */ drop function bob(integer); drop function fill(); drop table Bottles;
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