to_json()

Converts any SQL value to json or jsonb. Arrays and composites are converted recursively to arrays and objects (multidimensional arrays become arrays of arrays in JSON). Otherwise, if there is a cast from the SQL data type to json, the cast function will be used to perform the conversion;[a] otherwise, a scalar JSON value is produced. For any scalar other than a number, a Boolean, or a null value, the text representation will be used, with escaping as necessary to make it a valid JSON string value.

to_json ( anyelement ) → json
to_jsonb ( anyelement ) → jsonb

SELECT to_json('Fred said "Hi."'::text);

"Fred said \"Hi.\""

SELECT to_jsonb(row(42, 'Fred said "Hi."'::text));

{"f1": 42, "f2": "Fred said \"Hi.\""}

Want to run this against your own PostgreSQL server from an iPhone, iPad or Mac? These are ours — every connection goes straight from the device to your database, with no account and no server of ours in between.

Postgres & FriendsPostgreSQL and the open-source engines around it

Signature and description adapted from the PostgreSQL manual, used under the PostgreSQL License. PostgreSQL is a registered trademark of the PostgreSQL Community Association of Canada. This page is not affiliated with the PostgreSQL Global Development Group.