Cast a tbox to another type

tbox::{floatrange,period}

SELECT tbox 'TBOX((1,2000-01-01),(2,2000-01-02))'::floatrange;
-- "[1,2]"
SELECT tbox 'TBOX((1,2000-01-01),(2,2000-01-02))'::period;
-- "[2000-01-01, 2000-01-02]"

Cast another type to a tbox

{integer,float,numeric,intrange,floatrange}::tbox,

{timestamptz,timestampset,period,periodset,tint,tfloat}::tbox

SELECT floatrange '(1.0, 2.0)'::tbox;
-- "TBOX((1,),(2,))"
SELECT periodset '{(2001-01-01,2001-01-02), (2001-01-03,2001-01-04)}'::tbox;
-- "TBOX((,2001-01-01),(,2001-01-04))"

Cast an stbox to a another type

stbox::{period,box2d,box3d}

SELECT stbox 'STBOX T((1.0, 2.0, 2001-01-01), (3.0, 4.0, 2001-01-03))'::period;
-- "[2000-01-01, 2000-01-03]"
SELECT stbox 'STBOX Z((1 1 1),(3 3 3))'::box2d;
-- "BOX(1 1,3 3)"
SELECT stbox 'STBOX Z((1 1 1),(3 3 3))'::box3d;
-- "BOX3D(1 1 1,3 3 3)"

Cast another type to an stbox

{geometry,geography,box2d,box3d}::stbox

{timestamptz,timestampset,period,periodset,tgeompoint,tgeogpoint}::stbox

SELECT geometry 'Linestring(1 1,2 2)'::stbox;
-- "STBOX((1,1),(2,2))"
SELECT periodset '{(2001-01-01,2001-01-02), (2001-01-03,2001-01-04)}'::stbox;
-- "STBOX T((,,2001-01-01),(,,2001-01-04))"