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e5595de03e
Change the default_toast_compression GUC to be an enum rather than a string. Earlier, uncommitted versions of the patch supported using CREATE ACCESS METHOD to add new compression methods to a running system, but that idea was dropped before commit. So, we can simplify the GUC handling as well, which has the nice side effect of improving the error messages. While updating the documentation to reflect the new GUC type, also move it back to the right place in the list. I moved this while revising what became commit 24f0e395ac5892cd12e8914646fe921fac5ba23d, but apparently the intended ordering is "alphabetical" rather than "whatever Robert thinks looks nice." Rejigger things to avoid having access/toast_compression.h depend on utils/guc.h, so that we don't end up with every file that includes it also depending on something largely unrelated. Move a few inline functions back into the C source file partly to help reduce dependencies and partly just to avoid clutter. A few very minor cosmetic fixes. Original patch by Justin Pryzby, but very heavily edited by me, and reverse reviewed by him and also reviewed by by Tom Lane. Discussion: http://postgr.es/m/CA+TgmoYp=GT_ztUCeZg2i4hkHAQv8o=-nVJ1-TKWTG1zQOmOpg@mail.gmail.com
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/.