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Michael Paquier 63110c6264 Use multi-inserts for pg_depend 
This is a follow-up of the work done in e3931d01.  This case is a bit
different than pg_attribute and pg_shdepend: the maximum number of items
to insert is known in advance, but there is no need to handle pinned
dependencies.  Hence, the base allocation for slots is done based on the
number of items and the maximum allowed with a cap at 64kB.  Slots are
initialized once used to minimize the overhead of the operation.

The insertions can be done for dependencies of the same type.  More
could be done by grouping the insertion of multiple dependency types in
a single batch.  This is left as future work.

Some of the multi-insert logic is also simplified for pg_shdepend, as
per the feedback discussed for this specific patch.  This also moves to
indexing.h the variable capping the maximum amount of data that can be
used at once for a multi-insert, instead of having separate definitions
for pg_attribute, pg_depend and pg_shdepend.

Author: Daniel Gustafsson, Michael Paquier
Reviewed-by: Andres Freund, Álvaro Herrera
Discussion: https://postgr.es/m/20200807061619.GA23955@paquier.xyz
 		2020-09-05 13:52:47 +09:00
config Rename configure.in to configure.ac 2020-07-24 10:42:08 +02:00
contrib Remove unused parameter 2020-09-04 08:08:23 +02:00
doc doc: Change table alias names to lower case in tutorial chapter 2020-09-04 08:45:57 +02:00
src Use multi-inserts for pg_depend 2020-09-05 13:52:47 +09:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.gitattributes gitattributes: Add new file 2019-11-12 08:13:55 +01:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Make install-tests target work with vpath builds 2020-05-31 18:33:00 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Define OPENSSL_API_COMPAT 2020-07-19 12:14:42 +02:00
configure.ac Rename configure.in to configure.ac 2020-07-24 10:42:08 +02:00

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/.