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Update Japanese readme for pgstattuple.
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contrib/pgstattuple/README.pgstattuple.euc_jp

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$PostgreSQL: pgsql/contrib/pgstattuple/README.pgstattuple.euc_jp,v 1.7 2006/07/06 02:18:07 momjian Exp $
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$PostgreSQL: pgsql/contrib/pgstattuple/README.pgstattuple.euc_jp,v 1.8 2006/09/04 03:49:05 momjian Exp $
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pgstattuple README 2002/08/22 �а�ã��
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1. pgstattuple�Ȥ
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1. ���ݡ��Ȥ���Ƥ���ؿ
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pgstattuple
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-----------
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pgstattuple�ϡ�UPDATE��DELETE�Ǻ��줿��졼�����Υ����ΰ���礭����
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��졼������Τ�ʪ��Ū���礭�����Ф���ѡ�����ơ������ֵѤ��ޤ�����
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�ޤꡤ�ֵ��ͤ��礭����С�����������ߤ�¿���Τǡ�vacuum�򤫤���ɬ
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�פ�����Ȥ���Ƚ�Ǥν����ˤʤ�櫓�Ǥ�������ʳ��ˤ⤤�������ʾ���
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���֤�ޤ���
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test=# \x
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Expanded display is on.
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test=# select * from pgstattuple('pg_proc');
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-[ RECORD 1 ]------+-------
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table_len | 458752
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tuple_count | 1470
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tuple_len | 438896
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tuple_percent | 95.67
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dead_tuple_count | 11
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dead_tuple_len | 3157
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dead_tuple_percent | 0.69
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free_space | 8932
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free_percent | 1.95
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�ƹ��ܤ������Ǥ���
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table_len -- ��졼������ʪ��Ū���礭��(�Х���)
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tuple_count -- ���ץ��
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tuple_len -- ���ץ�Ĺ�ι��(�Х���)
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tuple_percent -- ���ץ�γ�硥table_len���Ф���tuple_len����Ψ��
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dead_tuple_len -- �ǥåɥ��ץ��
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dead_tuple_percent -- �ǥåɥ��ץ�γ�硥table_len���Ф���tuple_len����Ψ��
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free_space -- �����Ѳ�ǽ���ΰ�(�Х���)
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free_percent -- �����Ѳ�ǽ���ΰ补table_len���Ф���free_space����Ψ��
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pgstattuple() �ϡ���졼������Ĺ���䡢���ץ��"�����ΰ�"�γ��ʤɤ�
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������ֵѤ��ޤ��������ξ���ϡ�vacuum ��ɬ�פ��ɤ������桼����Ƚ��
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����Τ���Ω�ĤǤ��礦���㤨�аʲ��Τ褦�ʷ��ˤʤ�ޤ���
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test=> \x
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Expanded display is on.
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test=> SELECT * FROM pgstattuple('pg_catalog.pg_proc');
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-[ RECORD 1 ]------+-------
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table_len | 458752
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tuple_count | 1470
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tuple_len | 438896
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tuple_percent | 95.67
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dead_tuple_count | 11
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dead_tuple_len | 3157
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dead_tuple_percent | 0.69
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free_space | 8932
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free_percent | 1.95
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�ʲ����ƹ��ܤ����ƤǤ���
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table_len -- ��졼������ʪ��Ū���礭��(�Х���)
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tuple_count -- ���ץ��
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tuple_len -- ���ץ�Ĺ�ι��(�Х���)
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tuple_percent -- ���ץ�γ�硥table_len���Ф���tuple_len����Ψ��
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dead_tuple_len -- �ǥåɥ��ץ��
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dead_tuple_percent -- �ǥåɥ��ץ�γ�硥table_len���Ф���tuple_len����Ψ��
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free_space -- �����Ѳ�ǽ���ΰ�(�Х���)
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free_percent -- �����Ѳ�ǽ���ΰ补table_len���Ф���free_space����Ψ��
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pg_relpages
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-----------
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pg_relpages() �ϥ�졼�����Υڡ��������ֵѤ��ޤ���
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pgstatindex
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-----------
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pgstatindex() �ϥ���ǥå����˴ؤ��������ֵѤ��ޤ���
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test=> \x
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Expanded display is on.
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test=> SELECT * FROM pgstatindex('pg_cast_oid_index');
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-[ RECORD 1 ]------+------
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version | 2
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tree_level | 0
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index_size | 8192
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root_block_no | 1
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internal_pages | 0
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leaf_pages | 1
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empty_pages | 0
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deleted_pages | 0
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avg_leaf_density | 50.27
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leaf_fragmentation | 0
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bt_metap
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--------
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bt_metap() ��btree����ǥå����Υ᥿�ڡ����˴ؤ��������ֵѤ��ޤ���
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test=> SELECT * FROM bt_metap('pg_cast_oid_index');
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-[ RECORD 1 ]-----
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magic | 340322
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version | 2
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root | 1
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level | 0
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fastroot | 1
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fastlevel | 0
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bt_page_stats
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-------------
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bt_page_stats() �ϡ�btree��ñ��Υڡ����˴ؤ�������ɽ�����ޤ���
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test=> SELECT * FROM bt_page_stats('pg_cast_oid_index', 1);
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-[ RECORD 1 ]-+-----
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blkno | 1
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type | l
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live_items | 256
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dead_items | 0
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avg_item_size | 12
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page_size | 8192
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free_size | 4056
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btpo_prev | 0
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btpo_next | 0
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btpo | 0
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btpo_flags | 3
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bt_page_items
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-------------
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bt_page_items() �ϡ���btree�ڡ����θ��̤Υ����ƥ�˴ؤ�������ɽ�����ޤ���
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test=> SELECT * FROM bt_page_items('pg_cast_oid_index', 1);
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itemoffset | ctid | itemlen | nulls | vars | data
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------------+---------+---------+-------+------+-------------
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1 | (0,1) | 12 | f | f | 23 27 00 00
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2 | (0,2) | 12 | f | f | 24 27 00 00
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3 | (0,3) | 12 | f | f | 25 27 00 00
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4 | (0,4) | 12 | f | f | 26 27 00 00
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5 | (0,5) | 12 | f | f | 27 27 00 00
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6 | (0,6) | 12 | f | f | 28 27 00 00
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7 | (0,7) | 12 | f | f | 29 27 00 00
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8 | (0,8) | 12 | f | f | 2a 27 00 00
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2. pgstattuple�Υ��󥹥ȡ���
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