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Attached some minor corrections, mainly completion of removal of

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the  "relation with OID ##### does not exist" item, and some URL
corrections.

Ian Barwick
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Bruce Momjian
2007-10-13 03:37:12 +00:00
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Tue Oct 9 16:13:00 EDT 2007
Last updated: Fri Oct 12 23:36:59 EDT 2007
Current maintainer: Bruce Momjian (bruce@momjian.us)
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developers spread throughout the world and communicating via the
Internet. It is a community project and is not controlled by any
company. To get involved, see the developer's FAQ at
http://www.postgresql.org/files/documentation/faqs/FAQ_DEV.html
http://www.postgresql.org/docs/faqs.FAQ_DEV.html
1.2) Who controls PostgreSQL?
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http://www.commandprompt.com/ppbook/. There are a number of PostgreSQL
books available for purchase. One of the most popular ones is by Korry
Douglas. A list of book reviews can be found at
http://techdocs.postgresql.org/techdocs/bookreviews.php. There is also
a collection of PostgreSQL technical articles at
http://techdocs.postgresql.org/.
http://www.postgresql.org/docs/books/. There is also a collection of
PostgreSQL technical articles at
http://www.postgresql.org/docs/techdocs.
The command line client program psql has some \d commands to show
information about types, operators, functions, aggregates, etc. - use
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1.11) How can I learn SQL?
First, consider the PostgreSQL-specific books mentioned above. Another
one is "Teach Yourself SQL in 21 Days, Second Edition" at
http://members.tripod.com/er4ebus/sql/index.htm. Many of our users
like The Practical SQL Handbook, Bowman, Judith S., et al.,
Addison-Wesley. Others like The Complete Reference SQL, Groff et al.,
McGraw-Hill.
First, consider the PostgreSQL-specific books mentioned above. Many of
our users also like The Practical SQL Handbook, Bowman, Judith S., et
al., Addison-Wesley. Others like The Complete Reference SQL, Groff et
al., McGraw-Hill.
There are also many nice tutorials available online:
* http://www.intermedia.net/support/sql/sqltut.shtm
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4.18) How do I return multiple rows or columns from a function?
It is easy using set-returning functions,
http://www.postgresql.org/docs/techdocs.17
.
4.19) Why do I get "relation with OID ##### does not exist" errors when
accessing temporary tables in PL/PgSQL functions?
PL/PgSQL caches function scripts, and an unfortunate side effect is
that if a PL/PgSQL function accesses a temporary table, and that table
is later dropped and recreated, and the function called again, the
function will fail because the cached function contents still point to
the old temporary table. The solution is to use EXECUTE for temporary
table access in PL/PgSQL. This will cause the query to be reparsed
every time.
http://www.postgresql.org/docs/techdocs.17.
4.19) What replication solutions are available?