SELECT ST_AsText(ST_MakeLine(start_point,end_point)) as geom FROM
(
    SELECT
        ST_Pointn(geom, generate_series(1, ST_NumPoints(geom)-1)) as start_point,
        ST_Pointn(geom, generate_series(2, ST_NumPoints(geom))) as end_point
    FROM (
        SELECT ST_Segmentize(ST_GeomFromText('LINESTRING(0 0,0 50)'),5) as geom
        ) as line
) as tmp;

SELECT ST_AsText(ST_MakeLine(start_point,end_point)) as geom FROM
(
    SELECT
        ST_Pointn(geom, generate_series(1, ST_NumPoints(geom)-1)) as start_point,
        ST_Pointn(geom, generate_series(2, ST_NumPoints(geom))) as end_point
    FROM (
        SELECT ST_Segmentize(ST_GeomFromText(
        'LINESTRING(8.53011977325458 47.4525557235204,8.53683231588295 47.4527692267847)'
        ),5) as geom
        ) as line
) as tmp;