'AND' in WHERE clauses

Hi all,

Sometimes I get a bit confused with my AND and OR clauses in WHERE
statements. When I'm working with big data I often think it's done one
thing and find later it's done another. Given this, would someone just
glance at this for me please? Will this only set the_geom in the condition
that ALL of my WHERE clauses are satisfied? ( I hope so)

UPDATE stage SET the_geom =
st_setsrid(st_makeline(st_makepoint(soose::integer, soosn::integer),
st_makepoint(sdose::integer, sdosn::integer)),27700) WHERE sdurn::numeric =
0 AND bad_flag IS NULL AND smode5y = '1' AND
st_length(st_makeline(st_makepoint(soose::integer, soosn::integer),
st_makepoint(sdose::integer, sdosn::integer))) < 60;

Thanks

James