mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-06-01 22:41:43 +03:00
468b2d473b
* COLUMNSTORE_EXTENTS data_size now shows the total size on the highest segment of an extent file. It also shows 0 bytes if HWM is zero so that if there is more than one segment it doesn't show 8192 bytes for the lower segments. * COMPRESSION_RATIO was missing some data and using compressed data size instead of file size (which is probably more realistic).
89 lines
4.9 KiB
SQL
89 lines
4.9 KiB
SQL
CREATE DATABASE IF NOT EXISTS columnstore_info;
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USE columnstore_info;
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DROP FUNCTION IF EXISTS `format_filesize`;
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DELIMITER //
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CREATE FUNCTION `format_filesize`(filesize FLOAT) RETURNS varchar(20) CHARSET utf8 DETERMINISTIC
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BEGIN
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DECLARE n INT DEFAULT 1;
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IF filesize IS NULL THEN
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RETURN '0 Bytes';
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END IF;
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LOOP
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IF filesize < 1024 THEN
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RETURN concat(round(filesize, 2), ' ', elt(n, 'Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB', 'BB'));
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END IF;
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SET filesize = filesize / 1024;
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SET n = n + 1;
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END LOOP;
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END //
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DROP PROCEDURE IF EXISTS `total_usage` //
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CREATE PROCEDURE total_usage ()
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BEGIN
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SELECT
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(SELECT format_filesize(sum(data_size)) TOTAL_DATA_SIZE FROM INFORMATION_SCHEMA.COLUMNSTORE_EXTENTS) TOTAL_DATA_SIZE,
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(SELECT format_filesize(sum(file_size)) TOTAL_DISK_USAGE FROM INFORMATION_SCHEMA.COLUMNSTORE_FILES) TOTAL_DISK_USAGE;
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END //
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DROP PROCEDURE IF EXISTS `table_usage` //
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CREATE PROCEDURE table_usage (IN t_schema char(64), IN t_name char(64))
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`table_usage`: BEGIN
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DECLARE `locker` TINYINT UNSIGNED DEFAULT IS_USED_LOCK('table_usage');
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IF `locker` IS NOT NULL THEN
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SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Error acquiring table_usage lock';
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LEAVE `table_usage`;
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END IF;
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DO GET_LOCK('table_usage', 0);
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DROP TABLE IF EXISTS columnstore_info.columnstore_columns;
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DROP TABLE IF EXISTS columnstore_info.columnstore_files;
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CREATE TABLE columnstore_info.columnstore_columns engine=myisam as (select * from information_schema.columnstore_columns);
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ALTER TABLE columnstore_info.columnstore_columns ADD INDEX `object_id` (`object_id`);
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ALTER TABLE columnstore_info.columnstore_columns ADD INDEX `dictionary_object_id` (`dictionary_object_id`);
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CREATE TABLE columnstore_info.columnstore_files engine=myisam as (select * from information_schema.columnstore_files);
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ALTER TABLE columnstore_info.columnstore_files ADD INDEX `object_id` (`object_id`);
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IF t_name IS NOT NULL THEN
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SELECT TABLE_SCHEMA, TABLE_NAME, format_filesize(data) as DATA_DISK_USAGE, format_filesize(dict) as DICT_DISK_USAGE, format_filesize(data + dict) as TOTAL_USAGE FROM (
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SELECT TABLE_SCHEMA, TABLE_NAME, (SELECT sum(cf.file_size) as data FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema) as data, (SELECT sum(cf.file_size) as dict FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.dictionary_object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema GROUP BY table_schema, table_name) as dict
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FROM
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columnstore_info.columnstore_columns ics where table_name = t_name and (table_schema = t_schema or t_schema IS NULL)
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group by table_schema, table_name
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) q;
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ELSEIF t_schema IS NOT NULL THEN
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SELECT TABLE_SCHEMA, TABLE_NAME, format_filesize(data) as DATA_DISK_USAGE, format_filesize(dict) as DICT_DISK_USAGE, format_filesize(data + dict) as TOTAL_USAGE FROM (
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SELECT TABLE_SCHEMA, TABLE_NAME, (SELECT sum(cf.file_size) as data FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema) as data, (SELECT sum(cf.file_size) as dict FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.dictionary_object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema GROUP BY table_schema, table_name) as dict
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FROM
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columnstore_info.columnstore_columns ics where table_schema = t_schema
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group by table_schema, table_name
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) q;
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ELSE
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SELECT TABLE_SCHEMA, TABLE_NAME, format_filesize(data) as DATA_DISK_USAGE, format_filesize(dict) as DICT_DISK_USAGE, format_filesize(data + dict) as TOTAL_USAGE FROM (
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SELECT TABLE_SCHEMA, TABLE_NAME, (SELECT sum(cf.file_size) as data FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema) as data, (SELECT sum(cf.file_size) as dict FROM columnstore_info.columnstore_columns cc JOIN columnstore_info.columnstore_files cf ON cc.dictionary_object_id = cf.object_id WHERE table_name = ics.table_name and table_schema = ics.table_schema GROUP BY table_schema, table_name) as dict
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FROM
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columnstore_info.columnstore_columns ics
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group by table_schema, table_name
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) q;
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END IF;
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DROP TABLE IF EXISTS columnstore_info.columnstore_columns;
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DROP TABLE IF EXISTS columnstore_info.columnstore_files;
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DO RELEASE_LOCK('table_usage');
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END //
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DROP PROCEDURE IF EXISTS `compression_ratio` //
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CREATE PROCEDURE compression_ratio()
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BEGIN
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SELECT CONCAT((SELECT SUM(file_size) FROM information_schema.columnstore_files WHERE compressed_data_size IS NOT NULL) / (SELECT SUM(data_size) FROM information_schema.columnstore_extents) * 100, '%') COMPRESSION_RATIO;
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END //
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DELIMITER ;
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