Re: Any Postgress & MySQL experts in the house?

[Vargster <vargster@xxxxxxxxx>]

Andy,

I use RRD already, it does draw pretty graphs, but it doesn't store data
too
well, everything is constantly being averaged to save space, so you lose
the
fine detail.

That said, the reason for wanting to use MySQL is because the scripts I
have
are geared around Postgress and I want to save the fine detail of the solar
panels output.

Lee


On Wed, Mar 2, 2011 at 10:01 AM, Andy Davies <dajdavies@xxxxxxx>
wrote:

>
>
> Perhaps not the answer you're looking for but...
>
> Have you considered using something the RRDTool (
> http://www.mrtg.org/rrdtool/index.en.html)
to store the data instead?
>
> It's built for storing time series data, less resource hungry than
MySQL
> and
> can produce pretty graphs fairly easily.
>
> Cheers
>
> Andy
>
>
> On 1 March 2011 23:42, Vargster <vargster@xxxxxxx> wrote:
>
> > I've recently installed a solar PV system. The inverter in the
system, a
> > SMA
> > SB 3800 is fitted with an RS485 interface to read data out of it.
> > So to my problem, the only sensible code I've found to read data
uses
> > Postgress to store the data.
> > Not a major issue, but my main server is already underpowered
enough and
> > already runs MySQL, so I don't really want to install/run
Postgress on
> it.
> > This leaves me with having to convert a script to create the
Postgress DB
> > to
> > MySQL, but my MySQL is poor and my Postgress is non-existent, as
I've
> never
> > used it before.
> >
> > Anybody out there care to look this over?
> >
> > Cheers,
> > Lee
> >
> > --
> > -- PostgreSQL database dump
> > --
> > SET SESSION AUTHORIZATION 'postgres';
> >
> > --
> > -- TOC entry 3 (OID 2200)
> > -- Name: public; Type: ACL; Schema: -; Owner: postgres
> >
> > --
> > REVOKE ALL ON SCHEMA public FROM PUBLIC;
> > GRANT ALL ON SCHEMA public TO PUBLIC;
> >
> > SET SESSION AUTHORIZATION 'sma';
> > SET search_path = public, pg_catalog;
> >
> > --
> > -- TOC entry 4 (OID 8562513)
> >
> > -- Name: comments; Type: TABLE; Schema: public; Owner: sma
> > --
> > CREATE TABLE comments (
> > stamp timestamp without time zone DEFAULT
> > ('now'::text)::timestamp(6) with time zone,
> > addr integer,
> > "comment" text
> >
> > );
> >
> > --
> > -- TOC entry 5 (OID 13542410)
> > -- Name: stats; Type: TABLE; Schema: public; Owner: sma
> > --
> > CREATE TABLE stats (
> > stamp timestamp without time zone DEFAULT
> > ('now'::text)::timestamp(6) with time zone,
> >
> > addr integer,
> > "E-Total" double precision,
> > "h-Total" double precision,
> > "Pac" double precision,
> > "Vac" double precision,
> > "Fac" double precision,
> >
> > "Ipv" double precision,
> > "Vpv" double precision,
> > "Temperature" double precision
> > );
> >
> > --
> > -- TOC entry 6 (OID 13565009)
> > -- Name: stats_oid; Type: INDEX; Schema: public; Owner: sma
> >
> > --
> > CREATE INDEX stats_oid ON stats USING btree (oid);
> >
> > --
> > -- TOC entry 7 (OID 13565011)
> > -- Name: stats_stamp; Type: INDEX; Schema: public; Owner: sma
> > --
> > CREATE INDEX stats_stamp ON stats USING btree (stamp);
> >
> > SET SESSION AUTHORIZATION 'postgres';
> >
> > --
> > -- TOC entry 2 (OID 2200)
> > -- Name: SCHEMA public; Type: COMMENT; Schema: -; Owner: postgres
> > --
> > COMMENT ON SCHEMA public IS 'Standard public schema';
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>
>


[Non-text portions of this message have been removed]



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