ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS annotation_attributes_json JSONB;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS user_attributes_json JSONB;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS end_ts BIGINT;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS updated_at BIGINT;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS mining_job_id BIGINT;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS mining_task_id TEXT;
ALTER TABLE qna_table ADD COLUMN IF NOT EXISTS event_type_id BIGINT;
--TODO: index will be added after API confirmed
