change transformer column from JSON to TEXT

JSON is nice because the DB engine can parse the JSON, and we can query
JSON values inside an SQL query. However, we don't use that feature, we
simply use it as an opaque storage for the transformer parameters.

When we want to keep it as JSON, Postgres complains that it cannot
compare two values of JSON, which seems to be an issue in some generated
SQL query (I don't think we ever explicitely compare the value of
transformers?). We could fix that by using JSONB, but since we don't use
the "augmented" JSON features anyway, we might as well keep it as a
TEXT.

0 files changed, 0 insertions, 0 deletions