Sokolov blog » PostgreSQL http://blog.sokolov.me всякие заметки, в-основном freebsd,linux Wed, 14 Dec 2011 16:39:52 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Postgres: разное http://blog.sokolov.me/2011/03/11/postgres-%d1%80%d0%b0%d0%b7%d0%bd%d0%be%d0%b5/ http://blog.sokolov.me/2011/03/11/postgres-%d1%80%d0%b0%d0%b7%d0%bd%d0%be%d0%b5/#comments Thu, 10 Mar 2011 23:27:48 +0000 pavel http://blog.sokolov.me/?p=879 Изменение уровня дебага в консоли:
SET client_min_messages TO DEBUG;

]]> http://blog.sokolov.me/2011/03/11/postgres-%d1%80%d0%b0%d0%b7%d0%bd%d0%be%d0%b5/feed/ 0 Полнотекстовый поиск в postgresql http://blog.sokolov.me/2010/11/19/%d0%bf%d0%be%d0%bb%d0%bd%d0%be%d1%82%d0%b5%d0%ba%d1%81%d1%82%d0%be%d0%b2%d1%8b%d0%b9-%d0%bf%d0%be%d0%b8%d1%81%d0%ba-%d0%b2-postgresql/ http://blog.sokolov.me/2010/11/19/%d0%bf%d0%be%d0%bb%d0%bd%d0%be%d1%82%d0%b5%d0%ba%d1%81%d1%82%d0%be%d0%b2%d1%8b%d0%b9-%d0%bf%d0%be%d0%b8%d1%81%d0%ba-%d0%b2-postgresql/#comments Fri, 19 Nov 2010 00:24:54 +0000 pavel http://blog.sokolov.me/?p=749 http://www.sai.msu.su/~megera/postgres/talks/fts_pgsql_intro.htmll

]]> http://blog.sokolov.me/2010/11/19/%d0%bf%d0%be%d0%bb%d0%bd%d0%be%d1%82%d0%b5%d0%ba%d1%81%d1%82%d0%be%d0%b2%d1%8b%d0%b9-%d0%bf%d0%be%d0%b8%d1%81%d0%ba-%d0%b2-postgresql/feed/ 0 Postgres: логирование изменений с помощью триггеров http://blog.sokolov.me/2010/11/11/postgres-%d0%bb%d0%be%d0%b3%d0%b8%d1%80%d0%be%d0%b2%d0%b0%d0%bd%d0%b8%d0%b5-%d0%b8%d0%b7%d0%bc%d0%b5%d0%bd%d0%b5%d0%bd%d0%b8%d0%b9-%d1%81-%d0%bf%d0%be%d0%bc%d0%be%d1%89%d1%8c%d1%8e-%d1%82%d1%80%d0%b8/ http://blog.sokolov.me/2010/11/11/postgres-%d0%bb%d0%be%d0%b3%d0%b8%d1%80%d0%be%d0%b2%d0%b0%d0%bd%d0%b8%d0%b5-%d0%b8%d0%b7%d0%bc%d0%b5%d0%bd%d0%b5%d0%bd%d0%b8%d0%b9-%d1%81-%d0%bf%d0%be%d0%bc%d0%be%d1%89%d1%8c%d1%8e-%d1%82%d1%80%d0%b8/#comments Thu, 11 Nov 2010 15:16:47 +0000 pavel http://blog.sokolov.me/?p=742 Тема описывающая способы логирования

]]> http://blog.sokolov.me/2010/11/11/postgres-%d0%bb%d0%be%d0%b3%d0%b8%d1%80%d0%be%d0%b2%d0%b0%d0%bd%d0%b8%d0%b5-%d0%b8%d0%b7%d0%bc%d0%b5%d0%bd%d0%b5%d0%bd%d0%b8%d0%b9-%d1%81-%d0%bf%d0%be%d0%bc%d0%be%d1%89%d1%8c%d1%8e-%d1%82%d1%80%d0%b8/feed/ 0 Postgres 8.4 + FreeBSD 8.x http://blog.sokolov.me/2010/10/04/postgres/ http://blog.sokolov.me/2010/10/04/postgres/#comments Mon, 04 Oct 2010 12:44:35 +0000 kfx http://blog.sokolov.me/?p=712 Для увеличения максимального к-ва коннектов, осбслуживаемых постгресом:

sysctl.conf

kern.ipc.shmmax=2147483648
kern.ipc.shmall=2097152

loader.conf

kern.ipc.semmni=256
kern.ipc.semmns=32000
kern.ipc.semmnu=256

postgresql.conf

max_connections = 250

]]> http://blog.sokolov.me/2010/10/04/postgres/feed/ 0 Postgres: получение всех CONSTRAINTS http://blog.sokolov.me/2010/09/30/postgres-get-constaints/ http://blog.sokolov.me/2010/09/30/postgres-get-constaints/#comments Thu, 30 Sep 2010 19:17:14 +0000 pavel http://blog.sokolov.me/?p=708 SELECT tc.constraint_name,
tc.constraint_type,
tc.table_name,
kcu.column_name,
tc.is_deferrable,
tc.initially_deferred,
rc.match_option AS match_type,
rc.update_rule AS on_update,
rc.delete_rule AS on_delete,
ccu.table_name AS references_table,
ccu.column_name AS references_field
FROM information_schema.table_constraints tc
LEFT JOIN information_schema.key_column_usage kcu
ON tc.constraint_catalog = kcu.constraint_catalog
AND tc.constraint_schema = kcu.constraint_schema
AND tc.constraint_name = kcu.constraint_name
LEFT JOIN information_schema.referential_constraints rc
ON tc.constraint_catalog = rc.constraint_catalog
AND tc.constraint_schema = rc.constraint_schema
AND tc.constraint_name = rc.constraint_name
LEFT JOIN information_schema.constraint_column_usage ccu
ON rc.unique_constraint_catalog = ccu.constraint_catalog
AND rc.unique_constraint_schema = ccu.constraint_schema
AND rc.unique_constraint_name = ccu.constraint_name

]]> http://blog.sokolov.me/2010/09/30/postgres-get-constaints/feed/ 0 PostgreSQL 9.0 http://blog.sokolov.me/2010/09/20/postgresql-9-0/ http://blog.sokolov.me/2010/09/20/postgresql-9-0/#comments Mon, 20 Sep 2010 16:06:59 +0000 pavel http://blog.sokolov.me/?p=693 Exclusion Constraints:
http://developer.postgresql.org/pgdocs/postgres/ddl-constraints.html#DDL-CONSTRAINTS-EXCLUSION
http://www.depesz.com/index.php/2010/01/03/waiting-for-8-5-exclusion-constraints/

]]> http://blog.sokolov.me/2010/09/20/postgresql-9-0/feed/ 0 PosrgreSQL: Заметки http://blog.sokolov.me/2010/02/17/posrgresql-notes/ http://blog.sokolov.me/2010/02/17/posrgresql-notes/#comments Wed, 17 Feb 2010 20:56:56 +0000 pavel http://blog.sokolov.me/?p=528 Хорошие заметки по postgres.

Массивы:

Преобразование массивов:
Оригинал тут

select client_id, array_agg(order_id) from simple_table group by client_id;
select * from explode_array(array[1,2,3,4]);

Парсинг массивов postgres в php:
http://dklab.ru/lib/DB_Pgsql_Type/

Служебная информация:

Описание схемы:
http://www.postgresql.org/docs/8.4/interactive/information-schema.html

Выбор информации обо всех таблицах:
SELECT c.table_schema, c.table_name,
array_agg(CAST(c.column_name AS text)) as col_names,
array_agg(DISTINCT CAST(c.data_type AS text)) As dat_types
FROM information_schema.columns AS c
GROUP BY c.table_schema, c.table_name;

Либа для автоматических тестов PGUNIT:
http://dklab.ru/lib/dklab_pgunit/

Бэкапы

Хорошая статья про ON-LINE backup http://www.opennet.ru/base/sys/postgresql_online_backup.txt.html
Для того, чтобы сделать простой бэкап в формате SQL:
pg_dump --inserts -U pavel -W database_name > /home/pavel/backup.sql

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