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Previously \watch could not display the query execution time even when \timing was enabled because it used PSQLexec instead of SendQuery and that function didn't support \timing. This patch introduces PSQLexecWatch and changes \watch so as to use it, instead. PSQLexecWatch is the function to run the query, print its results and display how long it took (only when \timing is enabled). This patch also changes --echo-hidden so that it doesn't print the query that \watch executes. Since \watch cannot execute backslash command queries, they should not be printed even when --echo-hidden is set. Patch by me, review by Heikki Linnakangas and Michael Paquier
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 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.