How to query the names of all user-defined data tables in a database in PostgreSQL
@ Forandever 2011-11-13
1. query through command line\ D database-- Obtain the names of all tables.\ D table name-- Get the table structure 2. query through SQL
PostgreSQL database
Transaction:1. PostgreSQL databases do not support transaction nesting, but support defining new storage points in the current transaction, and use the storage points to solve the need for transaction nesting. Save points can
Http://www.mono-project.com/PostgreSQL#Some_Connection_Example
Parameter Definition
Description
Example
Server
Hostname of the PostgreSQL Server
Server = localhost
Database
Name of the
Author: Takhisis @ smth
Http://computer.mblogger.cn/abyss/
Be sure to keep yourself busy and don't want to worry about anything. Don't think about anything... Don't think about it. About PostgreSQL
PostgreSQL is an object-relational database
Download the window No Install Version at www.sqlsql.com and decompress it to the hard disk. the following commands are all in the bin directory.
Step 1. initialize the databaseInitdb-d directory-e encoding [-u username] -- locale = CDirectory
First, use superuser to connect to the database
By default, the Super User is set to ipvs.
The connection script command is Psql. This is in the bin directory of the installation directory.
/Bin $ Psql
Postgres -#
Create a user. Create a
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First, I declare that I have just entered the PostgreSQL camp from the MSSQL camp. I have been deeply impressed by MSSQL over the past few days!
Go to the topic. In MSSQL, you can easily use select * From otherdb for cross-database (same server or
A netstream object transmits audio and video streams between all online objects. If you only want to pass text chat content, you can use shared objects instead of using them.
The basic attributes of this object are:
Time until now, the number of
I have written programs in PostgreSQL and npgsql recently. Since there are more than 300 customers, some of them cannot be connected.
When max_connection is adjusted to 500, the problem is solved, but the memory usage is also soaring. When some data
PostgreSQL performance optimization http://blog.sina.com.cn/s/blog_681cd80d0100md5o.html
Every time I read the settings of postgresql, it seems that I forgot it every time. It will take a while. I finally decided to start my blog today.PostgreSQL
In MySQL, copy the existing table structure to a new table:
Method 1:Create Table custnew1 like MERs MERS;
In this method, only the structure of the table to be copied and the structure of the new table can be used to add new columns while
Overview
PostgreSQL 8.0.2 has been officially released. This version is widely recommended and has been directly supported by the windows2k/xp platform since 8.0, the pgadmin III Graphic Interface database management tool (open-source) is attached
Postgres allows other Linux users to log on through the command line:
1. Modify the file pg_mirror.conf in the/usr/local/pgsql/data directory.
Local all ident Omicron
2. Modify the file pg_ident.conf in the/usr/local/pgsql/data directory to
Create a project and reference npgsql to define the connection parameters.
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->String strconn = @ "Server = 127.0.0.1; database = template_postgis;
CREATE OR REPLACE FUNCTION isdigit(text) returns BOOLEAN AS 'select $1 ~ ''^(-)?[0-9]+$'' as result' LANGUAGE sql; --test functionSELECT isdigit('1') --return trueSELECT isdigit('A') --return false
CREATE OR REPLACE FUNCTION isString(
After taking a lot of detours, I finally fixed this issue and posted it here to share with you.
1: download and install the PostgreSQL ODBC driverHttp://www.postgresql.org/ftp/odbc/versions/msi/2: Configure ODBC to connect to the PostgreSQL
PostgreSQL is the world's most advanced open-source database system. It provides multi-version parallel control and supports almost all SQL components (including subqueries, transaction and user defined types and functions), and can obtain a very
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