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Tom Lane bc8393cf27 Further adjust SPITupleTable to provide a public row-count field. Now that commit `fec0778c8` drew a clear line between public and private fields in SPITupleTable, it seems pretty silly that the count of valid tuples isn't on the public side of that line. The reason why not was that there wasn't such a count. For reasons lost in the mists of time, spi.c preferred to keep a count of remaining free entries in the array. But that seems pretty pointless: it's unlike the way we handle similar code everywhere else, and it involves extra subtractions that surely outweigh having to do a comparison rather than test-for-zero to check for array-full. Hence, rearrange so that this code does the expansible array logic the same as everywhere else, with a count of valid entries alongside the allocated array length. And document the count as public. I looked for core-code callers where it would make sense to start relying on tuptable->numvals rather than the separate SPI_processed variable. Right now there don't seem to be places where it'd be a win to do so without more code restructuring than I care to undertake today. In principle, though, having SPITupleTables be fully self-contained should be helpful down the line. Discussion: https://postgr.es/m/16852.1563395722@sss.pgh.pa.us		2019-07-18 10:37:13 -04:00
config	Update config.guess and config.sub	2019-04-27 14:25:00 +02:00
contrib	Fix sepgsql test results for commit `d97b714a2`.	2019-07-17 13:04:59 -04:00
doc	Further adjust SPITupleTable to provide a public row-count field.	2019-07-18 10:37:13 -04:00
src	Further adjust SPITupleTable to provide a public row-count field.	2019-07-18 10:37:13 -04:00
.dir-locals.el	Make Emacs perl-mode indent more like perltidy.	2019-01-13 11:32:31 -08:00
.gitattributes	Add XSL stylesheet to fix up SVG files	2019-06-19 21:26:42 +02:00
.gitignore	Support for optimizing and emitting code in LLVM JIT provider.	2018-03-22 11:05:22 -07:00
COPYRIGHT	Update copyright for 2019	2019-01-02 12:44:25 -05:00
GNUmakefile.in	Integrate cpluspluscheck into build system.	2019-05-31 12:36:17 -07:00
HISTORY	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00
Makefile	Don't unset MAKEFLAGS in non-GNU Makefile.	2019-06-25 09:36:21 +12:00
README	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00
README.git	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00
aclocal.m4	Fix configure's AC_CHECK_DECLS tests to work correctly with clang.	2018-11-19 12:01:47 -05:00
configure	Remove support for non-ELF BSD systems	2019-07-01 23:56:20 +01:00
configure.in	Remove support for non-ELF BSD systems	2019-07-01 23:56:20 +01:00

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/.