simplify_proc_table_in_inj_file.sql: add sql to simplify process table in injection files

gstlal-inspiral/share/simplify_proc_table_in_inj_file.sql

+-- Copyright (C) 2011--2012,2014,2015  Kipp Cannon, Chad Hanna
+--
+-- This program is free software; you can redistribute it and/or modify it
+-- under the terms of the GNU General Public License as published by the
+-- Free Software Foundation; either version 2 of the License, or (at your
+-- option) any later version.
+--
+-- This program is distributed in the hope that it will be useful, but
+-- WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+-- Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along
+-- with this program; if not, write to the Free Software Foundation, Inc.,
+-- 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+--
+-- process clean up.  same computer, unix process ID, and start time =
+-- same process
+--
+
+CREATE INDEX tmpindex ON process (node, unix_procid, start_time);
+CREATE TEMPORARY TABLE _idmap_ AS
+	SELECT
+		old.process_id AS old,
+		MIN(new.process_id) AS new
+	FROM
+		process AS old
+		JOIN process AS new ON (
+			new.node == old.node
+			AND new.unix_procid == old.unix_procid
+			AND new.start_time == old.start_time
+		)
+	GROUP BY
+		old.process_id;
+DROP INDEX tmpindex;
+CREATE INDEX tmpindex ON _idmap_ (old);
+
+UPDATE sim_inspiral SET process_id = (SELECT new FROM _idmap_ WHERE old == process_id);
+
+DELETE FROM process WHERE process_id IN (SELECT old FROM _idmap_ WHERE old != new);
+DELETE FROM process_params WHERE process_id NOT IN (SELECT process_id FROM process);
+
+DROP INDEX tmpindex;
+DROP TABLE _idmap_;
+
+VACUUM;