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Final FAQ cleanups to remove information about very old releases.

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Bruce Momjian
2005-02-01 02:40:50 +00:00
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Mon Jan 31 21:35:15 EST 2005
Last updated: Mon Jan 31 21:40:28 EST 2005
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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uncertain how a cross-database query should even behave.
contrib/dblink allows cross-database queries using function calls. Of
course, a client can make simultaneous connections to different
course, a client can also make simultaneous connections to different
databases and merge the results on the client side.
4.19) How do I return multiple rows or columns from a function?
In 7.3, you can easily return multiple rows or columns from a
function, http://techdocs.postgresql.org/guides/SetReturningFunctions.
It is easy using set-returning functions,
http://techdocs.postgresql.org/guides/SetReturningFunctions.
4.20) Why can't I reliably create/drop temporary tables in PL/PgSQL
functions?
PL/PgSQL caches function contents, and an unfortunate side effect is
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
@ -838,8 +838,7 @@
possible to use a third-party encrypted transport, such as stunnel
or ssh, rather than PostgreSQL's native SSL connections.)
* Database user passwords are automatically encrypted when stored in
version 7.3. In previous versions, you must enable the option
PASSWORD_ENCRYPTION in postgresql.conf.
the system tables.
* The server can run using an encrypted file system.
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