I am trying to read a bytea
column from PostgreSQL using Ruby. The problem is that it returns the hex encoded string of the bytea
value. I would like it to return exactly the same as if I would open a binary file with the same content with File.read()
.
The following gives me the hex encoded value:
require 'pg'
conn = PG.connect(...)
res = conn.exec('SELECT bytea_column FROM some_table')
res.each do |r|
raw = r['bytea_column']
puts "#{raw}"
end
I think I need to use PG::TextDecoder::Bytea
to decode the bytea
column correctly. Is this correct? And if so, how exactly is it supposed to be used?
Thanks everyone but I figured it out. The answer is PG::Connection.unescape_bytea
:
require 'pg'
conn = PG.connect(...)
res = conn.exec('SELECT bytea_column FROM some_table')
res.each do |r|
raw = r['bytea_column']
binary_data = PG::Connection.unescape_bytea(raw)
puts "#{binary_data}"
end
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