-- 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: x$ps_schema_table_statistics_io -- -- Helper view for schema_table_statistics -- Having this view with ALGORITHM = TEMPTABLE means MySQL can use the optimizations for -- materialized views to improve the overall performance. -- -- mysql> SELECT * FROM x$ps_schema_table_statistics_io LIMIT 1\G -- *************************** 1. row *************************** -- table_schema: charsets -- table_name: Index -- count_read: 1 -- sum_number_of_bytes_read: 18710 -- sum_timer_read: 20229409070 -- count_write: 0 -- sum_number_of_bytes_write: 0 -- sum_timer_write: 0 -- count_misc: 2 -- sum_timer_misc: 80768480 -- CREATE OR REPLACE ALGORITHM = TEMPTABLE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW x$ps_schema_table_statistics_io ( table_schema, table_name, count_read, sum_number_of_bytes_read, sum_timer_read, count_write, sum_number_of_bytes_write, sum_timer_write, count_misc, sum_timer_misc ) AS SELECT extract_schema_from_file_name(file_name) AS table_schema, extract_table_from_file_name(file_name) AS table_name, SUM(count_read) AS count_read, SUM(sum_number_of_bytes_read) AS sum_number_of_bytes_read, SUM(sum_timer_read) AS sum_timer_read, SUM(count_write) AS count_write, SUM(sum_number_of_bytes_write) AS sum_number_of_bytes_write, SUM(sum_timer_write) AS sum_timer_write, SUM(count_misc) AS count_misc, SUM(sum_timer_misc) AS sum_timer_misc FROM performance_schema.file_summary_by_instance GROUP BY table_schema, table_name;