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9a30e154b3
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Michael Paquier 9a30e154b3 Use macros from xlog_internal.h for WAL segment logic in pg_resetwal 
When scanning for the end of WAL, pg_resetwal has been maintaining its
own internal logic to calculate segment numbers and to parse a WAL
segment name for its timeline and segment number.  The code claimed for
example that XLogFromFileName() cannot be used because it lacks the
possibility of specifying a WAL segment size, which is not the case
since fc49e24, that has made the WAL segment size configurable at
initialization time, extending this routine to do so.

Similarly, this switches one segment number calculation to use
XLByteToSeg() rather than the same logic present in xlog_internal.h.
While on it, switch to TimeLineID in pg_resetwal.c for TLI numbers
parsed from segment names, to be more consistent with
XLogFromFileName().  The maths are exactly the same, but the code gets
simplified.

Author: Bharath Rupireddy
Reviewed-by: Kyotaro Horiguchi
Discussion: https://postgr.es/m/CALj2ACX+E_jnwqH_jmjhNG8BczJTNRTOLpw8K1CB1OcB48MJ8w@mail.gmail.com
2022-10-05 14:10:13 +09:00
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contrib Revert "Optimize order of GROUP BY keys". 2022-10-03 10:56:16 -04:00
doc Revert "Optimize order of GROUP BY keys". 2022-10-03 10:56:16 -04:00
src Use macros from xlog_internal.h for WAL segment logic in pg_resetwal 2022-10-05 14:10:13 +09:00
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README
README.git

README 

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/.