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postgresqlddljsonb

postgresql migrating JSON to JSONB

In postgresql 9.4 the new JSONB was incorporated.

On a live DB in postgresql 9.3 I have a JSON column.

I want to migrate it to JSONB.

Assuming I migrated the DB first to 9.4 (using pg_upgrade). What do I do next?

Solution 
  • ALTER TABLE table_with_json
  ALTER COLUMN my_json
  SET DATA TYPE jsonb
  USING my_json::jsonb;