How to Fix the \'Unterminated String\' Error When Creating Stored Procedures with Goose and PostgreSQL?

Postgres Goose Raises Unterminated String Error

Issue

When attempting to create a stored procedure with Goose using a PostgreSQL database, the process encounters the following error:

(pq: unterminated dollar-quoted string at or near "$BODY$
BEGIN
    LOOP
        -- first try to update the key
        UPDATE userslocations SET count = count+1 WHERE userid = user_id AND locationid = location_id;
"), quitting migration.

Cause

Goose's error echoing from the pq library indicates misformatted SQL. Specifically, complex statements containing semicolons require special annotation in Goose:

Resolution

To rectify the error, annotate the SQL in the following manner:

CREATE OR REPLACE FUNCTION add_userlocation(user_id INT, location_id INT) RETURNS VOID AS
$BODY$
-- +goose StatementBegin
BEGIN
       LOOP
           UPDATE userslocations SET count = count+1 WHERE userid = user_id AND locationid = location_id;
        IF found THEN
            RETURN;
        END IF;
        BEGIN
            INSERT INTO userslocations(userid,locationid, count) VALUES (user_id, location_id, 1);
               RETURN;
           EXCEPTION WHEN unique_violation THEN
        END;
       END LOOP;
-- +goose StatementEnd
END;
$BODY$
LANGUAGE plpgsql;

By declaring the beginning and end of each statement, Goose is instructed to handle the SQL properly, resolving the unterminated string error.

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