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A trigger function can be used to address the issue of unsuccessful parsing of JSONB data and automatic insertion into a table by performing the following steps:

1. Define the trigger function: Define a trigger function that will be executed when a new row is inserted into the table. The function should take the new data as input and parse the JSONB data.

2. Check for parsing errors: The trigger function should check if there are any errors while parsing the JSONB data. If there are errors, the function should raise an exception and prevent the data from being inserted into the table.

3. Insert the data: If there are no errors, the trigger function should insert the data into the table.

Here's an example of how the trigger function would look like:

CREATE OR REPLACE FUNCTION jsonbinserttrigger() RETURNS trigger AS $$ BEGIN -- Parsing the JSONB data NEW.data = NEW.data::jsonb;

-- Checking for parsing errors BEGIN SELECT jsonbtypeof(NEW.data) INTO STRICT vtype; EXCEPTION WHEN others THEN RAISE EXCEPTION 'Invalid JSONB data: %', SQLERRM; END;

-- Inserting the data INSERT INTO mytable (id, data) VALUES (NEW.id, NEW.data); RETURN NULL; END; $$ LANGUAGE 'plpgsql';

CREATE TRIGGER mytableinserttrigger BEFORE INSERT ON mytable FOR EACH ROW EXECUTE FUNCTION jsonbinserttrigger();

In this example, the trigger function parses the JSONB data, checks for errors, and inserts the data into the mytable table. The trigger function is then attached to the INSERT event of the mytable table.