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Tom Lane authored
Make use of the statement boundary info added by commit ab1f0c82
to let pg_stat_statements behave more sanely when multiple SQL queries
are jammed into one query string.  It now records just the relevant
part of the source string, not the whole thing, for each individual
query.

Even when no multi-statement strings are involved, users may notice small
changes in the output: leading and trailing whitespace and semicolons will
be stripped from statements, which did not happen before.

Also, significantly expand pg_stat_statements' regression test script.

Fabien Coelho, reviewed by Craig Ringer and Kyotaro Horiguchi,
some mods by me

Discussion: https://postgr.es/m/alpine.DEB.2.20.1612200926310.29821@lancre
83f2061d
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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:

	http://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
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system.  Copyright and license information can be found in the
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