A brief introduction to PostgreSQL
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PostgreSQL is an open source object-relational database system that has been in development since 1982. It supports Linux, Windows, Mac OS X, and Solaris and can be installed using package managers or installers. PostgreSQL provides many features including procedural languages, functions, indexes, triggers, multi-version concurrency control, and point-in-time recovery. It also has various administration and development tools.
![PostgreSQL ’s (short) INTRODUCTION Nguyen Vu Hung [email_address] 2010/05/05](https://image.slidesharecdn.com/postgresql-introduction-20100506-100506084523-phpapp02/85/A-brief-introduction-to-PostgreSQL-1-320.jpg)
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A brief introduction to PostgreSQL
- 1. PostgreSQL ’s (short) INTRODUCTION Nguyen Vu Hung [email_address] 2010/05/05
- 11. PHP and PostgresSQL ?> $dbconn4 = pg_connect ( $conn_string ); $conn_string = "host=sheep port=5432 dbname=test user=test password=bar" ; $dbconn3 = pg_connect ( "host=sheep port=5432 dbname=test user=test password=foo" ); $dbconn2 = pg_connect ( "host=localhost port=5432 dbname=test" ); $dbconn = pg_connect ( "dbname=test" ); <?php
- 17. Functions and Cursors CREATE FUNCTION myfunc(refcursor, refcursor) RETURNS SETOF refcursor AS $$ BEGIN OPEN $1 FOR SELECT * FROM table_1; RETURN NEXT $1; OPEN $2 FOR SELECT * FROM table_2; RETURN NEXT $2; END; $$ LANGUAGE plpgsql; -- need to be in a transaction to use cursors. BEGIN; SELECT * FROM myfunc('a', 'b'); FETCH ALL FROM a; FETCH ALL FROM b; COMMIT;