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-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- 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; version 2 of the License.
--
-- 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 St, Fifth Floor, Boston, MA 02110-1301 USA
--
-- View: host_summary_by_statement_latency
--
-- Summarizes overall statement statistics by host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select-- from host_summary_by_statement_latency;
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | host | total | total_latency | max_latency | lock_latency | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | hal | 3381 | 00:02:09.13 | 1.48 s | 1.07 s | 1151 | 93947 | 150 | 91 |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
--
CREATE OR REPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'mariadb.sys'@'localhost'
SQL SECURITY INVOKER
VIEW host_summary_by_statement_latency (
host,
total,
total_latency,
max_latency,
lock_latency,
rows_sent,
rows_examined,
rows_affected,
full_scans
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
SUM(count_star) AS total,
sys.format_time(SUM(sum_timer_wait)) AS total_latency,
sys.format_time(MAX(max_timer_wait)) AS max_latency,
sys.format_time(SUM(sum_lock_time)) AS lock_latency,
SUM(sum_rows_sent) AS rows_sent,
SUM(sum_rows_examined) AS rows_examined,
SUM(sum_rows_affected) AS rows_affected,
SUM(sum_no_index_used) + SUM(sum_no_good_index_used) AS full_scans
FROM performance_schema.events_statements_summary_by_host_by_event_name
GROUP BY IF(host IS NULL, 'background', host)
ORDER BY SUM(sum_timer_wait) DESC;
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