postgres analyze

http://www.datadoghq.com/2013/08/100x-faster-postgres-performance-by-changing-1-line/SELECT C.key,C.x_key,C.tags,X.nameFrom context CJOIN xOn c.x_key = X.keyWHERE C.key = any (ARRAY[15368196,--11,000 other keys--)])and C.x_key = 1and c.tags @> array[e ' blah '];SELECT C.key,C.x_key,C.tags,X.nameFrom context CJOIN xOn c.x_key = X.keyWHERE C.key = any (VALUES (15368196),--11,000 other keys--)and C.x_key = 1and c.tags @> array[e ' blah '];Modify one line

S skills, Postgres skills If you need to add indexes when the business volume is large, you need to use CONCURRENTLY. Otherwise, your database will easily break down. For example create index CONCURRENTLY idx_order_records_bank_statist_uid on order_records(statist_uid) See Http://www.postgresql.org/docs/9.1/static/sql-createindex.html In a large business volume, if you want to execute some time-consuming database tasks, sometimes you will fin

one. Eclipse MyBatis Generator Plug-in installationtwo. MyBatis Generator (Postgres)-– generates DTO, Dao, Mapping One. Eclipse MyBatis Generator Plug-in installation1. Self-motion installation--Open Eclipse, click Help>software Update--Select the "Available Software" tab and click the "Add Site" button--Enter the following information:location:http://mybatis.googlecode.com/svn/sub-projects/generator/trunk/eclipse/updatesite/--Click OK, automatically

$password-c $table $recovery _dir Six, Postgres: $targethost $port $user $dbname $filename $recovery _file IP Address Port User name Database name Backup files Recover files Backup: Pg_dump-c-b-h $targethost-P $port-U "$user" $dbname > $filename Recovery: psql-h $targethost-P $port-U "$user"-D $dbname-F $recovery _file Copyright NOTICE: This article for B

PHP page access to postgres database issues This machine is equipped with Php,apache,postgres database I want to insert the data from the page into the native database from the browser PHP page, I write the code is certainly correct, but just can't insert the data into the library (run, he only run the code before the library code, and then do not go, and no error, but the code is absolutely correct, the fo

Reference: http://my.oschina.net/dddpeter/blog/116153 1. Create a user 1 Sudo-s-U postgres 2 Psql 3 postgres# CREATE USER xxxx1 with PASSWORD ' xxxx '; 4 postgres# CREATE DATABASE xxxx2; 5 postgres#

Tags: dev dbn ini required pytho useradd configuration name LangLong time do not write things, have been looking at some open source things, the following paste on Linux installation configuration postgres and use Dblink operation reference for readers and their future reference: 1. Download Source: postgresql-9.3.2.tar.gz 2. Create Postgres cluster groups and users: Groupadd

Rails connection postgresql error: psql: Fatal error: User "s" Ident authentication failed, psqlpostgresPsql: Fatal error: User "s" Ident authentication failed 1. After the postgresql database is installed, you must initialize and configure some rails projects to connect to postgresql. After postgresql data is installed (the yum command is directly installed) Step 1: Initialize the database # Service postgresql initdb (Note: After initialization, the default postgresql database has a default us

1. sudo apt-get install PostgreSQL #安装psql2. Su passwd postgres #设置postgres账户的密码3. postgresql.conf sets the value of the Listen_addresses key in the file to4. pg_hba.conf the configuration file, add the following configuration under the host all 127.0.0.1/32 MD5 lineHost All 0.0.0.0/0 MD55. The above configuration file is installed by default under/etc/postgresql/9.4/main6.Sudo/etc/init.d/postgresql start #

field type in the table. 4.Extract procedures/functions/packages[[emailprotected]_222 ~]# ora2pg-c/etc/ora2pg/ora2pg.conf[========================>] 2/2 functions (100.0 %) end of output. [[emailprotected]_222 ~]# cat lottu04.sql--Generated by ORA2PG, the Oracle database Schema Converter, version 17.4- -Copyright 2000-2016 Gilles darold. All rights reserved.--DATASOURCE:dbi:Oracle:ora229SET client_encoding to ' UTF8 '; \set on_error_stop ONCREATE OR REPLACE F Unction ora2pg_16_to10 (v_16_data t

Operating environment for Kali virtual machines 1 [Email protected]:~# apt-get Install PostgreSQL Start the service 12 [Email protected]:~# service PostgreSQL start[OK] starting PostgreSQL 9.1 database Server:main. Modify the PostgreSQL password to Toor: 123 [Email protected]:~# sudo-u postgres psql postgrespostgres=# alter user p