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The check for whether to complain about not having an old connection to get parameters from was seriously out of date: it had not been rethought when we invented connstrings, nor when we invented the -reuse-previous option. Replace it with a check that throws an error if reuse-previous is active and we lack an old connection to reuse. While that doesn't move the goalposts very far in terms of easing reconnection after a server crash, at least it's consistent. If the user specifies a connstring plus additional parameters (which is invalid per the documentation), the extra parameters were silently ignored. That seems like it could be really confusing, so let's throw a syntax error instead. Teach the connstring code path to re-use the old connection's password in the same cases as the old-style-syntax code path would, ie if we are reusing parameters and the values of username, host/hostaddr, and port are not being changed. Document this behavior, too, since it was unmentioned before. Also simplify the implementation a bit, giving rise to two new and useful properties: if there's a "password=xxx" in the connstring, we'll use it not ignore it, and by default (i.e., except with --no-password) we will prompt for a password if the re-used password or connstring password doesn't work. The previous code just failed if the re-used password didn't work. Given the paucity of field complaints about these issues, I don't think that they rise to the level of back-patchable bug fixes, and in any case they might represent undesirable behavior changes in minor releases. So no back-patch. Discussion: https://postgr.es/m/235210.1603321144@sss.pgh.pa.us |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.