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authorTom Lane <tgl@sss.pgh.pa.us>2002-04-13 17:17:29 +0000
committerTom Lane <tgl@sss.pgh.pa.us>2002-04-13 17:17:29 +0000
commit291c875f239cd6a5238955eaef234d476103c8da (patch)
tree0ec02627e35dbb8a632ac957459c144c1f97137c
parent6f2c0d47f8fa718e0b2242380c4b22f031d3ec54 (diff)
downloadpostgresql-291c875f239cd6a5238955eaef234d476103c8da.tar.gz
postgresql-291c875f239cd6a5238955eaef234d476103c8da.zip
Update/correct inheritance examples.
-rw-r--r--doc/src/sgml/inherit.sgml61
1 files changed, 24 insertions, 37 deletions
diff --git a/doc/src/sgml/inherit.sgml b/doc/src/sgml/inherit.sgml
index cb4c8cb0af5..a0d27b0768f 100644
--- a/doc/src/sgml/inherit.sgml
+++ b/doc/src/sgml/inherit.sgml
@@ -1,5 +1,5 @@
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/Attic/inherit.sgml,v 1.18 2002/01/07 02:29:12 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/Attic/inherit.sgml,v 1.19 2002/04/13 17:17:29 tgl Exp $
-->
<chapter id="inherit">
@@ -56,35 +56,28 @@ SELECT name, altitude
which returns:
<programlisting>
-+----------+----------+
-|name | altitude |
-+----------+----------+
-|Las Vegas | 2174 |
-+----------+----------+
-|Mariposa | 1953 |
-+----------+----------+
-|Madison | 845 |
-+----------+----------+
+ name | altitude
+-----------+----------
+ Las Vegas | 2174
+ Mariposa | 1953
+ Madison | 845
</programlisting>
</para>
<para>
On the other hand, the following query finds
all the cities that are not state capitals and
- are situated at an altitude of 500ft or higher:
+ are situated at an altitude over 500ft:
<programlisting>
SELECT name, altitude
FROM ONLY cities
WHERE altitude &gt; 500;
-+----------+----------+
-|name | altitude |
-+----------+----------+
-|Las Vegas | 2174 |
-+----------+----------+
-|Mariposa | 1953 |
-+----------+----------+
+ name | altitude
+-----------+----------
+ Las Vegas | 2174
+ Mariposa | 1953
</programlisting>
</para>
@@ -112,18 +105,16 @@ SELECT name, altitude
which returns:
<programlisting>
-+---------+----------+----------+
-|tableoid |name | altitude |
-+---------+----------+----------+
-|37292 |Las Vegas | 2174 |
-+---------+----------+----------+
-|37280 |Mariposa | 1953 |
-+---------+----------+----------+
-|37280 |Madison | 845 |
-+---------+----------+----------+
+ tableoid | name | altitude
+----------+-----------+----------
+ 139793 | Las Vegas | 2174
+ 139793 | Mariposa | 1953
+ 139798 | Madison | 845
</programlisting>
- If you do a join with pg_class you can see the actual table name:
+ (If you try to reproduce this example, you will probably get different
+ numeric OIDs.) By doing a join with pg_class you can see the actual table
+ names:
<programlisting>
SELECT p.relname, c.name, c.altitude
@@ -134,15 +125,11 @@ SELECT name, altitude
which returns:
<programlisting>
-+---------+----------+----------+
-|relname |name | altitude |
-+---------+----------+----------+
-|capitals |Las Vegas | 2174 |
-+---------+----------+----------+
-|cities |Mariposa | 1953 |
-+---------+----------+----------+
-|cities |Madison | 845 |
-+---------+----------+----------+
+ relname | name | altitude
+----------+-----------+----------
+ cities | Las Vegas | 2174
+ cities | Mariposa | 1953
+ capitals | Madison | 845
</programlisting>
</para>