partition by in postgresql

Often add partitioned tables, and clean up partitioned tables, very simple 2 functions--Add partition table CREATE OR REPLACE function create_table (table_name character Varying,table_num integer ) RETURNS void LANGUAGE Plpgsql as $function $ declare V_date char (8); V_tablename varchar (64); Begin for I in 0..table_num loop V_date: =to_char (current_date + i, ' YYYYMMDD '); V_tablename: = table_name | | ' _'|| V_date; Execute ' CREATE TABLE ' | |

1 build Large tables.2 Creating partition Inheritance 3 define rule or trigger? 1 Building Large TablesCREATEtablestudent (student_id bigserial,namevarchar (+), scoresmallint) 2 create partition Inheritance createtablestudent_ Qualified (Check (Score>=60 )) inherits (student) ; CREATE TABLE student_nqualified (CHECK (score ) INHERITS (student) ; 3 defining rule or trigg

Tags: Pgsql partition Table:--Main Table CREATE TABLE test (ID integer, name varchar (32)); CREATE index idx_test_id on test using btree (ID); --Tables CREATE TABLE Test_b (like test including constraints including defaults including indexes) inherits (test); CREATE TABLE Test_c (like test including constraints including defaults including indexes) inherits (test); ALTER TABLE TEST_B add constraint con_test_c check (ID >=1001 and ID Reference:M

http://xu3stones.blog.163.com/blog/static/205957136201210309424303Primary partition, extended partition, logical partition, active partition, system partition, boot partition ...Main boot sector, Mbr,bootloader .....All kinds of c

1. Download the source code $ mkdir /usr/downloads$ wget -c http://cn2.php.net/distributions/php-5.6.20.tar.gz$ tar -xvf php-5.6.20.tar.gz$ mv php-5.6.20 /usr/local/src$ cd !$ cd php-5.6.20 2. Read the installation Instructions $ ls -also$ less README$ less INSTALL 3. Installing dependent Packages $ yum install apr apr-util apr-devel apr-util-devel prce lynx 4. Installing httpd $ wget -c http://apache.fayea.com//httpd/httpd-2.4.20.tar.gz$ tar -xvf httpd-2.4.20.tar.gz$ cd httpd-2.4.20$ ./config

Partitioning1 is suitable for processing large amount of data, such as TB class2 to improve reading and writing and query speed of mega database3 users can create tables by applying partitioning techniques to save data in a partitioned form4 partitioning is the separation of large tables or indexes into relatively small, independently managed parts. The partitioned table does not differ from the unpartitioned table in the execution of the DML statement.5 When partitioning a table, you must speci

Scene: Recently in the basic knowledge of Linux, the inevitable design to the Linux disk partition, before the summary, but the kind of summary is to copy someone else's article, summed up do not want to see the second time, so it is easy to forget! Clearly understand the partition, I will be able to operate on their own computer!1 Primary partitionWe know that the first sector of the hard disk, which is th

The company is using partition online. The partition field of a table is incorrect and needs to be rebuilt. It turns out that there is no way to directly fix it using an SQL statement like modifying the primary key field or index field. Instead, you need to create a temporary table with a down time. So I carefully read the document and studied the details of partition