That statement you pasted defines it, it's stored as a function in postgres. See https://www.postgresql.org/docs/9.5/static/xfunc-sql.html for docs on how this works in postgres.

John Pearson <mailto:[email protected]>
July 10, 2017 at 2:36 PMvia Postbox <https://www.postbox-inc.com/?utm_source=email&utm_medium=sumlink&utm_campaign=reach>
My question, if this is my migration:

*migration.rb*
def change

connection.execute <<-SQL

CREATE OR REPLACE FUNCTION john_uuid_generator() RETURNS uuid

AS $$ SELECT * FROM #{uuid_function} $$

LANGUAGE SQL VOLATILE;

SQL

end


Where do I define john_uuid_generator()?

Thanks!




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