Assorted fixes for Cygwin:

[postgresql] / src / tutorial / advanced.source

diff --git a/src/tutorial/advanced.source b/src/tutorial/advanced.source
index f8a819a2f3a6d92e4f00003f478d732503475932..7dd3ab1bb40f32f46eea89b5220dd750a9d613a5 100644 (file)
--- a/src/tutorial/advanced.source
+++ b/src/tutorial/advanced.source
@@ -1,19 +1,18 @@
 ---------------------------------------------------------------------------
 --
 -- advanced.sql-
---    more POSTGRES SQL features. (These are not part of the SQL-92
---    standard.)
+--    Tutorial on advanced more PostgreSQL features
 --
 --
 -- Copyright (c) 1994, Regents of the University of California
 --
--- $Id: advanced.source,v 1.3 1999/07/08 15:28:51 momjian Exp $
+-- $Id: advanced.source,v 1.5 2002/04/11 21:18:50 tgl Exp $
 --
 ---------------------------------------------------------------------------
 
 -----------------------------
 -- Inheritance:
---     a table can inherit from zero or more tables. A query can reference
+--     A table can inherit from zero or more tables.  A query can reference
 --     either all rows of a table or all rows of a table plus all of its
 --     descendants.
 -----------------------------
@@ -31,7 +30,7 @@ CREATE TABLE capitals (
        state           char(2)
 ) INHERITS (cities);
 
--- now, let's populate the tables
+-- Now, let's populate the tables.
 INSERT INTO cities VALUES ('San Francisco', 7.24E+5, 63);
 INSERT INTO cities VALUES ('Las Vegas', 2.583E+5, 2174);
 INSERT INTO cities VALUES ('Mariposa', 1200, 1953);
@@ -42,86 +41,20 @@ INSERT INTO capitals VALUES ('Madison', 1.913E+5, 845, 'WI');
 SELECT * FROM cities;
 SELECT * FROM capitals;
 
--- like before, a regular query references rows of the base table only
-
-SELECT name, altitude
-FROM cities
-WHERE altitude > 500;
-
--- on the other hand, you can find all cities, including capitals, that
--- are located at an altitude of 500 'ft or higher by:
+-- You can find all cities, including capitals, that
+-- are located at an altitude of 500 ft or higher by:
 
 SELECT c.name, c.altitude
-FROM cities* c
+FROM cities c
 WHERE c.altitude > 500;
 
+-- To scan rows of the parent table only, use ONLY:
 
------------------------------
--- Time Travel:
---     this feature allows you to run historical queries. 
---     removed for v6.3, but possible using triggers.
---     see contrib/spi/README for more information.
------------------------------
-
--- first, let's make some changes to the cities table (suppose Mariposa's
--- population grows 10% this year)
-
--- UPDATE cities
--- SET population = population * 1.1
--- WHERE name = 'Mariposa';
-
--- the default time is the current time ('now'):
-
--- SELECT * FROM cities WHERE name = 'Mariposa';
-
--- we can also retrieve the population of Mariposa ever has. ('epoch' is the
--- earliest time representable by the system)
-
--- SELECT name, population
--- FROM cities['epoch', 'now'] -- can be abbreviated to cities[,]
--- WHERE name = 'Mariposa';
-
-
-----------------------
--- Arrays:
---      attributes can be arrays of base types or user-defined types
-----------------------
-
-CREATE TABLE sal_emp (
-       name    text,
-       pay_by_quarter  int4[],
-       schedule        text[][]
-);
-
--- insert instances with array attributes.  Note the use of braces
-
-INSERT INTO sal_emp VALUES (
-       'Bill',
-       '{10000,10000,10000,10000}',
-       '{{"meeting", "lunch"}, {}}');
-
-INSERT INTO sal_emp VALUES (
-       'Carol',
-       '{20000,25000,25000,25000}',
-       '{{"talk", "consult"}, {"meeting"}}');
-
-----------------------
--- queries on array attributes
-----------------------
-SELECT name FROM sal_emp WHERE
-       sal_emp.pay_by_quarter[1] <> sal_emp.pay_by_quarter[2];
-
--- retrieve third quarter pay of all employees
-
-SELECT sal_emp.pay_by_quarter[3] FROM sal_emp;
-
--- select subarrays
-
-SELECT sal_emp.schedule[1:2][1:1] FROM sal_emp WHERE   
-       sal_emp.name = 'Bill';
+SELECT name, altitude
+FROM ONLY cities
+WHERE altitude > 500;
 
 
 -- clean up (you must remove the children first)
-DROP TABLE sal_emp;
 DROP TABLE capitals;
 DROP TABLE cities;