Postgresql base64 encode

Question

I need to convert a db value into base64encode. I tried:

 select encode(cast(est_name as text),\'base64\') from establishments;

It showing

Answer 1

The encode function encodes from bytea to text.

select encode(est_name::bytea, 'base64') 
from establishments;

http://www.postgresql.org/docs/current/static/functions-binarystring.html#FUNCTIONS-BINARYSTRING-OTHER