We need to update a JSONB data structure in our tables to include an 'is_valid' flag. I was able to build a CTE which I use to create a temp table containing the 'is_valid' value, the path where it needs to be set, and the join criteria. Let's say that the temp table looks like:
For each path needing updates, I have a single entry in the temp table... How do I structure the WITH..UPDATE..FROM query to apply all changes from the temp table?
I've tried to use a simple case:
UPDATE target AS d SET data=jsonb_set(d.data, n.path, is_valid::JSONB, true) FROM temp_table n WHERE d.time_inserted=n.time_inserted AND d.data->>'id'=n.id
But this results in just the first update for a given PK being applied.
Any assistance would be appreciated!!!
This is a limitation of SQL-based processing.
You will probably need to use pl/pgsql and a loop here. Within the loop you execute jsonb_set(...) once for each path on temp_table.