hive=# ALTER TABLE "PARTITION_PARAMS" ALTER COLUMN "PARAM_VALUE" TYPE varchar(64000);
ALTER TABLE
hive=# \d "PARTITION_PARAMS"
Table "public.PARTITION_PARAMS"
Column | Type | Modifiers
-------------+--------------------------+---------------------------------
PART_ID | bigint | not null
PARAM_KEY | character varying(256) | not null
PARAM_VALUE | character varying(64000) | default NULL::character varying