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The previous design for this table didn't really work in narrow views,
such as PDF output; besides which its reliance on large morerows
values made it a pain to maintain (cf ab3e4fbd5, for example).
I experimented with a couple of ways to fix it, but the best and
simplest is to split it up into a separate table for each event
type category.
I also rearranged the event ordering to be strictly alphabetical,
as nobody would ever be able to find entries otherwise.
There is work afoot to revise the set of event names described
in this table, but this commit just changes the layout, not the
contents.
In passing, add a missing entry to pg_locks.locktype,
and cross-reference that to the related wait event list.
Discussion: https://postgr.es/m/6916.1589146280@sss.pgh.pa.us
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/.