How can I use row_to_json for a subset of columns in a row? (without
creating a new view or using a CTE?)
What I want returned:
{"email_address":"j...@tanga.com","username":"joevandyk"}
Note that there is no "id" column in the result.
create table users (id serial primary key, email_address varchar,
username varchar);
insert into users (email_address, username) values ('j...@tanga.com',
'joevandyk');
select row_to_json(users) from users;
{"id":1,"email_address":"j...@tanga.com","username":"joevandyk"}
Correct, except that the "id" column is in the result.
select row_to_json(row(users.email_address, users.username)) from users;
{"f1":"j...@tanga.com","f2":"joevandyk"}
The column names are incorrect.
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