Re: 'AND' in WHERE clauses

Thanks.

On 10 December 2013 15:23, Albe Laurenz <laurenz(dot)albe(at)wien(dot)gv(dot)at> wrote:

> James David Smith wrote:
> > 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;
>
> Yes, all clauses joined with AND have to be satisfied for the condition to
> be true
> and for the update to happen.
>
> Yours,
> Laurenz Albe
>