postgres/contrib/pgstattuple/README.pgstattuple.euc_jp

$PostgreSQL: pgsql/contrib/pgstattuple/README.pgstattuple.euc_jp,v 1.5 2003/11/29 22:39:29 pgsql Exp $

pgstattuple README		2002/08/22 <EFBFBD>а<EFBFBD>ã<EFBFBD><EFBFBD>

1. pgstattuple<EFBFBD>Ȥ<EFBFBD>

   pgstattuple<EFBFBD>ϡ<EFBFBD>UPDATE<EFBFBD><EFBFBD>DELETE<EFBFBD>Ǻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>줿<EFBFBD>ơ<EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD>Υ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>礭<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>ơ<EFBFBD><EFBFBD>֥뼫<EFBFBD>Τ<EFBFBD>ʪ<EFBFBD><EFBFBD>Ū<EFBFBD><EFBFBD><EFBFBD>礭<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ф<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵѤ<EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>ޤꡤ<EFBFBD>ֵ<EFBFBD><EFBFBD>ͤ<EFBFBD><EFBFBD>礭<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߤ<EFBFBD>¿<EFBFBD><EFBFBD><EFBFBD>Τǡ<EFBFBD>vacuum<EFBFBD>򤫤<EFBFBD><EFBFBD><EFBFBD>ɬ
   <EFBFBD>פ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥ<EFBFBD><EFBFBD><EFBFBD>Ƚ<EFBFBD>Ǥν<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˤʤ<EFBFBD><EFBFBD>櫓<EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʳ<EFBFBD><EFBFBD>ˤ⤤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD>

test=# \x
Expanded display is on.
test=# select * from pgstattuple('pg_proc');
-[ RECORD 1 ]------+-------
table_len          | 458752
tuple_count        | 1470
tuple_len          | 438896
tuple_percent      | 95.67
dead_tuple_count   | 11
dead_tuple_len     | 3157
dead_tuple_percent | 0.69
free_space         | 8932
free_percent       | 1.95

<EFBFBD>ƹ<EFBFBD><EFBFBD>ܤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>

table_len		-- <EFBFBD>ơ<EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD><EFBFBD>ʪ<EFBFBD><EFBFBD>Ū<EFBFBD><EFBFBD><EFBFBD>礭<EFBFBD><EFBFBD>(<EFBFBD>Х<EFBFBD><EFBFBD><EFBFBD>)
tuple_count		-- <EFBFBD><EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD><EFBFBD>
tuple_len		-- <EFBFBD><EFBFBD><EFBFBD>ץ<EFBFBD>Ĺ<EFBFBD>ι<EFBFBD><EFBFBD><EFBFBD>(<EFBFBD>Х<EFBFBD><EFBFBD><EFBFBD>)
tuple_percent		-- <EFBFBD><EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD>硥table_len<EFBFBD><EFBFBD><EFBFBD>Ф<EFBFBD><EFBFBD><EFBFBD>tuple_len<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ψ<EFBFBD><EFBFBD>
dead_tuple_len		-- <EFBFBD>ǥåɥ<EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD><EFBFBD>
dead_tuple_percent	-- <EFBFBD>ǥåɥ<EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD>γ<EFBFBD><EFBFBD>硥table_len<EFBFBD><EFBFBD><EFBFBD>Ф<EFBFBD><EFBFBD><EFBFBD>tuple_len<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ψ<EFBFBD><EFBFBD>
free_space		-- <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѳ<EFBFBD>ǽ<EFBFBD><EFBFBD><EFBFBD>ΰ<EFBFBD>(<EFBFBD>Х<EFBFBD><EFBFBD><EFBFBD>)
free_percent		-- <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѳ<EFBFBD>ǽ<EFBFBD><EFBFBD><EFBFBD>ΰ补table_len<EFBFBD><EFBFBD><EFBFBD>Ф<EFBFBD><EFBFBD><EFBFBD>free_space<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ψ<EFBFBD><EFBFBD>

2. pgstattuple<EFBFBD>Υ<EFBFBD><EFBFBD>󥹥ȡ<EFBFBD><EFBFBD><EFBFBD>

   PostgreSQL<EFBFBD><EFBFBD>/usr/local/pgsql<EFBFBD>˥<EFBFBD><EFBFBD>󥹥ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѤǤ<EFBFBD><EFBFBD>ꡤtest<EFBFBD>ǡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>١<EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>pgstattuple<EFBFBD>򥤥󥹥ȡ<EFBFBD><EFBFBD>뤹<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>򼨤<EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD>

    $ make
    $ make install

    <EFBFBD>桼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͽ<EFBFBD><EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD>

    $ psql -e -f /usr/local/pgsql/share/contrib/pgstattuple.sql test


3. pgstattuple<EFBFBD>λȤ<EFBFBD><EFBFBD><EFBFBD>

   pgstattuple<EFBFBD>θƤӽФ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϰʲ<EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>

   CREATE OR REPLACE FUNCTION pgstattuple(text) RETURNS pgstattuple_type
     AS 'MODULE_PATHNAME', 'pgstattuple'
     LANGUAGE 'c' WITH (isstrict);

   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD>ơ<EFBFBD><EFBFBD>֥<EFBFBD>̾

   <EFBFBD>ؿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>pgstattuple_type<EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>

   pgstattuple<EFBFBD>ϥơ<EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD><EFBFBD>AccessShareLock<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD><EFBFBD>Τǡ<EFBFBD>
   pgstattuple <EFBFBD><EFBFBD><EFBFBD>¹<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ơ<EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD>˹<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̤<EFBFBD><EFBFBD>֤<EFBFBD><EFBFBD><EFBFBD>ǽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD>

   pgstattuple<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ץ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD>ߡפ<EFBFBD>Ƚ<EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD>
   HeapTupleSatisfiesNow()<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥ<EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>

4. pgstattuple<EFBFBD>Υ饤<EFBFBD><EFBFBD><EFBFBD>󥹾<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˤĤ<EFBFBD><EFBFBD><EFBFBD>

   pgstattuple.c<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD>˽񤤤Ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̤<EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD>pgstattuple <EFBFBD>ϴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD><EFBFBD>
   <EFBFBD>ڤǤ<EFBFBD><EFBFBD><EFBFBD>pgstattuple <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥˤ<EFBFBD><EFBFBD>ä<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뤤<EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̤˴ؤ<EFBFBD><EFBFBD><EFBFBD>
   <EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>餤<EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

5. <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   2002/09/04

	SRF<EFBFBD>ѹ<EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Tom Lane	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󥿡<EFBFBD><EFBFBD>ե<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ν<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԥä<EFBFBD><EFBFBD><EFBFBD>
	<EFBFBD><EFBFBD><EFBFBD>Τ<EFBFBD><EFBFBD>Ȥ򤳤<EFBFBD>README<EFBFBD>ˤ<EFBFBD>ȿ<EFBFBD>ǡ<EFBFBD>

   2002/08/23

	SRF(Set Returning Function)<EFBFBD><EFBFBD><EFBFBD>Ȥä<EFBFBD>7.3<EFBFBD>Ѥ˽񤭴<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

   2001/12/20 Tom Lane<EFBFBD>ˤ<EFBFBD><EFBFBD>뽤<EFBFBD><EFBFBD>

   	Fix pgstattuple to acquire a read lock on the target table.  This
	prevents embarassments such as having the table dropped or truncated
	partway through the scan.  Also, fix free space calculation to include
	pages that currently contain no tuples.

   2001/10/01 PostgreSQL 7.2 <EFBFBD><EFBFBD>contrib module<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͽ

   2001/08/30 pgstattuple <EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0.1<EFBFBD><EFBFBD><EFBFBD>꡼<EFBFBD><EFBFBD>