1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
# -*- ruby -*-
require 'pg'
# An example of how to use SQL cursors. This is mostly a straight port of
# the cursor portion of testlibpq.c from src/test/examples.
$stderr.puts "Opening database connection ..."
conn = PG.connect( :dbname => 'test' )
#
conn.transaction do
conn.exec( "DECLARE myportal CURSOR FOR select * from pg_database" )
res = conn.exec( "FETCH ALL IN myportal" )
puts res.fields.collect {|fname| "%-15s" % [fname] }.join( '' )
res.values.collect do |row|
puts row.collect {|col| "%-15s" % [col] }.join( '' )
end
end
|
