问PostgreSQL 13中是否有unix时间戳范围函数？

EN

CREATE INDEX user_sub_exclusion_index ON user_sub USING GIST (
  user_id,
  tsrange(sub_start_time, sub_end_time)
);

ALTER TABLE user_sub ADD CONSTRAINT user_sub_exclusion_constraint EXCLUDE USING GIST (
  user_id WITH =,
  tsrange(sub_start_time, sub_end_time) WITH &&
);

CREATE TABLE public.user_sub (
    id int8 NOT NULL GENERATED ALWAYS AS IDENTITY,
    app_id varchar NOT NULL,
    product_id int4 NOT NULL,
    iap_product_id varchar NOT NULL,
    created_time int8 NOT NULL,
    updated_time int8 NOT NULL,
    user_id int8 NOT NULL,
    sub_start_time int8 NOT NULL DEFAULT 0,
    sub_end_time int8 NOT NULL DEFAULT 0,
    enabled int2 NOT NULL DEFAULT 1,
    order_id varchar NOT NULL,
    CONSTRAINT user_sub_new_pk PRIMARY KEY (id),
    CONSTRAINT user_sub_new_un UNIQUE (order_id)
);

CREATE INDEX user_sub_exclusion_index ON user_sub USING GIST (
  user_id,
  tstzrange(sub_start, sub_end)
);

SQL Error [42704]: ERROR: data type bigint has no default operator class for access method "gist"
  Hint: You must specify an operator class for the index or define a default operator class for the data type.