add a script to delete quiet events (0.001 Hz)

(cherry picked from commit 0475e89b)

gstlal-inspiral/share/delete_quiet_events.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.
+
+--
+-- begin deleting quiet events
+--
+
+
+SELECT
+	"Number of coincs before clustering: " || count(*)
+FROM
+	coinc_event;
+
+--
+-- create a look-up table of info required for clustering
+--
+
+CREATE TEMPORARY TABLE _cluster_info_ AS
+	SELECT
+		coinc_event.coinc_event_id AS coinc_event_id,
+		coinc_event.time_slide_id AS category,
+		coinc_inspiral.end_time AS end_time,	--- only keep the integer part
+		coinc_event.likelihood AS ranking_stat,
+		coinc_inspiral.combined_far as far,
+		coinc_inspiral.snr AS snr
+	FROM
+		coinc_event
+		JOIN coinc_inspiral ON (
+			coinc_inspiral.coinc_event_id == coinc_event.coinc_event_id
+		);
+CREATE INDEX tmpindex1 ON _cluster_info_ (coinc_event_id);
+CREATE INDEX tmpindex2 ON _cluster_info_ (category, end_time, ranking_stat);
+
+--
+-- delete all events with combined far < 1e-4 or NULL
+--
+DELETE FROM
+	coinc_event
+WHERE
+	EXISTS (
+		SELECT
+			*
+		FROM
+			_cluster_info_ AS _cluster_info_a_
+		WHERE
+			_cluster_info_a_.coinc_event_id == coinc_event.coinc_event_id AND (_cluster_info_a_.far > 1e-3 OR _cluster_info_a_.far IS NULL)
+	);
+DROP INDEX tmpindex1;
+DROP INDEX tmpindex2;
+DROP TABLE _cluster_info_;
+
+SELECT
+	"Number of coincs after clustering: " || count(*)
+FROM
+	coinc_event;
+
+--
+-- delete unused coinc_inspiral rows
+--
+
+DELETE FROM
+	coinc_inspiral
+WHERE
+	coinc_event_id NOT IN (
+		SELECT
+			coinc_event_id
+		FROM
+			coinc_event
+	);
+
+--
+-- delete unused coinc_event_map rows
+--
+
+DELETE FROM
+	coinc_event_map
+WHERE
+	coinc_event_id NOT IN (
+		SELECT
+			coinc_event_id
+		FROM
+			coinc_event
+	);
+
+--
+-- delete unused sngl_inspiral rows
+--
+
+DELETE FROM
+	sngl_inspiral
+WHERE
+	event_id NOT IN (
+		SELECT
+			event_id
+		FROM
+			coinc_event_map
+		WHERE
+			table_name == 'sngl_inspiral'
+	);
+
+--
+-- process clean up.
+--
+
+
+CREATE INDEX tmpindex ON process (process_id);
+CREATE INDEX tmpindex2 ON process_params (process_id);
+DELETE FROM process WHERE process_id NOT IN (SELECT process_id FROM coinc_event);
+DELETE FROM process_params WHERE process_id NOT IN (SELECT process_id FROM process);
+DROP INDEX tmpindex;
+DROP INDEX tmpindex2;
+
+--
+-- shrink the file
+--
+
+VACUUM;