From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Jan Wieck <wieck(at)debis(dot)com>, PostgreSQL HACKERS <pgsql-hackers(at)postgreSQL(dot)org> |
Subject: | Re: [HACKERS] type coerce problem with lztext |
Date: | 2000-02-27 19:06:21 |
Message-ID: | 200002271906.OAA01236@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-hackers |
> Yup, TypeCategory was the missing ingredient. Seems to work now.
>
> > Yes, the 3043 bytes long rule action string got stored in 855
> > bytes in pg_rewrite. That's 71.9% compression rate on this
> > attempt!
>
> Over all the rules in the regression test database, I see:
>
> regression=# select sum(length(ev_action)),sum(octet_length(ev_action)) from pg
> _rewrite;
> sum | sum
> --------+-------
> 105270 | 38091
> (1 row)
>
> or about 64% compression. Not bad...
We clearly needed this for 7.0 because of the larger plans. Good thing
Jan had it available, becuase I can imagine some major headaches for
people without it.
--
Bruce Momjian | http://www.op.net/~candle
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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