From 8e5793ab60bba65ffaa0f2237b39c9580d8972c7 Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Mon, 19 Oct 2020 19:03:46 -0400
Subject: Fix connection string handling in src/bin/scripts/ programs.
When told to process all databases, clusterdb, reindexdb, and vacuumdb
would reconnect by replacing their --maintenance-db parameter with the
name of the target database. If that parameter is a connstring (which
has been allowed for a long time, though we failed to document that
before this patch), we'd lose any other options it might specify, for
example SSL or GSS parameters, possibly resulting in failure to connect.
Thus, this is the same bug as commit a45bc8a4f fixed in pg_dump and
pg_restore. We can fix it in the same way, by using libpq's rules for
handling multiple "dbname" parameters to add the target database name
separately. I chose to apply the same refactoring approach as in that
patch, with a struct to handle the command line parameters that need to
be passed through to connectDatabase. (Maybe someday we can unify the
very similar functions here and in pg_dump/pg_restore.)
Per Peter Eisentraut's comments on bug #16604. Back-patch to all
supported branches.
Discussion: https://postgr.es/m/16604-933f4b8791227b15@postgresql.org
---
doc/src/sgml/ref/clusterdb.sgml | 20 +++++++++++++-------
doc/src/sgml/ref/createdb.sgml | 3 +++
doc/src/sgml/ref/dropdb.sgml | 3 +++
doc/src/sgml/ref/reindexdb.sgml | 20 +++++++++++++-------
doc/src/sgml/ref/vacuumdb.sgml | 20 +++++++++++++-------
5 files changed, 45 insertions(+), 21 deletions(-)
(limited to 'doc/src')
diff --git a/doc/src/sgml/ref/clusterdb.sgml b/doc/src/sgml/ref/clusterdb.sgml
index c53bacf8648..c838b22c440 100644
--- a/doc/src/sgml/ref/clusterdb.sgml
+++ b/doc/src/sgml/ref/clusterdb.sgml
@@ -90,9 +90,9 @@ PostgreSQL documentation
- Specifies the name of the database to be clustered.
- If this is not specified and (or
- ) is not used, the database name is read
+ Specifies the name of the database to be clustered,
+ when / is not used.
+ If this is not specified, the database name is read
from the environment variable PGDATABASE. If
that is not set, the user name specified for the connection is
used. The dbname can be a
- Specifies the name of the database to connect to discover what other
- databases should be clustered. If not specified, the
- postgres database will be used,
- and if that does not exist, template1 will be used.
+ Specifies the name of the database to connect to to discover which
+ databases should be clustered,
+ when / is used.
+ If not specified, the postgres database will be used,
+ or if that does not exist, template1 will be used.
+ This can be a connection
+ string. If so, connection string parameters will override any
+ conflicting command line options. Also, connection string parameters
+ other than the database name itself will be re-used when connecting
+ to other databases.
diff --git a/doc/src/sgml/ref/createdb.sgml b/doc/src/sgml/ref/createdb.sgml
index 95cc82dc88b..86473455c9d 100644
--- a/doc/src/sgml/ref/createdb.sgml
+++ b/doc/src/sgml/ref/createdb.sgml
@@ -284,6 +284,9 @@ PostgreSQL documentation
database will be used; if that does not exist (or if it is the name
of the new database being created), template1 will
be used.
+ This can be a connection
+ string. If so, connection string parameters will override any
+ conflicting command line options.
diff --git a/doc/src/sgml/ref/dropdb.sgml b/doc/src/sgml/ref/dropdb.sgml
index fe523a2ee1d..d36aed38c52 100644
--- a/doc/src/sgml/ref/dropdb.sgml
+++ b/doc/src/sgml/ref/dropdb.sgml
@@ -217,6 +217,9 @@ PostgreSQL documentation
target database. If not specified, the postgres
database will be used; if that does not exist (or is the database
being dropped), template1 will be used.
+ This can be a connection
+ string. If so, connection string parameters will override any
+ conflicting command line options.
diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index a6d93693c5d..57414453337 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -134,9 +134,9 @@ PostgreSQL documentation
- Specifies the name of the database to be reindexed.
- If this is not specified and (or
- ) is not used, the database name is read
+ Specifies the name of the database to be reindexed,
+ when / is not used.
+ If this is not specified, the database name is read
from the environment variable PGDATABASE. If
that is not set, the user name specified for the connection is
used. The dbname can be a
- Specifies the name of the database to connect to discover what other
- databases should be reindexed. If not specified, the
- postgres database will be used,
- and if that does not exist, template1 will be used.
+ Specifies the name of the database to connect to to discover which
+ databases should be reindexed,
+ when / is used.
+ If not specified, the postgres database will be used,
+ or if that does not exist, template1 will be used.
+ This can be a connection
+ string. If so, connection string parameters will override any
+ conflicting command line options. Also, connection string parameters
+ other than the database name itself will be re-used when connecting
+ to other databases.
diff --git a/doc/src/sgml/ref/vacuumdb.sgml b/doc/src/sgml/ref/vacuumdb.sgml
index 6dcdab9cafd..a90fc9322f9 100644
--- a/doc/src/sgml/ref/vacuumdb.sgml
+++ b/doc/src/sgml/ref/vacuumdb.sgml
@@ -92,9 +92,9 @@ PostgreSQL documentation
- Specifies the name of the database to be cleaned or analyzed.
- If this is not specified and (or
- ) is not used, the database name is read
+ Specifies the name of the database to be cleaned or analyzed,
+ when / is not used.
+ If this is not specified, the database name is read
from the environment variable PGDATABASE. If
that is not set, the user name specified for the connection is
used. The dbname can be a
- Specifies the name of the database to connect to discover what other
- databases should be vacuumed. If not specified, the
- postgres database will be used,
- and if that does not exist, template1 will be used.
+ Specifies the name of the database to connect to to discover which
+ databases should be vacuumed,
+ when / is used.
+ If not specified, the postgres database will be used,
+ or if that does not exist, template1 will be used.
+ This can be a connection
+ string. If so, connection string parameters will override any
+ conflicting command line options. Also, connection string parameters
+ other than the database name itself will be re-used when connecting
+ to other databases.
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