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为重建Mysql索引安排每周脚本

database-indexes scalability mysql

1

abksharma · 技术社区 · 7 年前

我们计划部署一个存储过程来重建索引。根据Mysql论坛的以下说明。有人可以发送任何示例脚本,对特定数据库中的所有表执行相同的操作。在周末的节目中,我们是否会遇到任何问题或担忧。

ALTER TABLE t1 ENGINE = InnoDB;

https://dev.mysql.com/doc/refman/5.7/en/rebuilding-tables.html#rebuilding-tables-alter-table

2 回复 | 直到 7 年前

1

0

Kris.J 7 年前

ALTER TABLE

但是,如果您想检查数据库,您可以使用checkmysql命令,它会改变以及其他一些位n块来优化索引,更新统计数据等。 mysqlcheck

2

0

abksharma 7 年前

USE VIPLamar; 
DROP PROCEDURE IF  EXISTS Lamar_Index_Rebuild_Script;
DELIMITER //

-- call Lamar_Index_Rebuild_Script();
CREATE PROCEDURE Lamar_Index_Rebuild_Script()
mysp:BEGIN

Declare v_max_counter int;
Declare v_counter int;

Declare v_query longtext;
Declare v_table_name varchar(1000);
Declare v_datetime datetime default now();
DROP temporary TABLE if exists temp_todo;

create temporary table temp_todo
(
    id int auto_increment primary key, 
    `table_name` varchar(1000)
);

create table if not exists VIP_Lamar_Index_Rebuild_Script
(
    id int auto_increment primary key, 
    `table_name` varchar(1000),
    start_date datetime,
    finish_date datetime
);

insert into temp_todo (table_name)
SELECT table_name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = DATABASE();

-- loop thru table
-- check if table exists
Select max(id) Into v_max_counter from temp_todo;
Set v_counter = 1;
WHILE v_counter <= v_max_counter 
Do
    select  `table_name` into  v_table_name from temp_todo where id = v_counter;
    IF (EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.TABLES WHERE  table_name = v_table_name AND table_schema = DATABASE()))
    THEN
        set v_query = concat('OPTIMIZE TABLE ' , v_table_name , ';');
        set @stmt = v_query;
        PREPARE tempstatement FROM @stmt;
        EXECUTE tempstatement;
        DEALLOCATE PREPARE tempstatement;
    END if;

    set v_counter = v_counter +1 ;
end while;   

insert into VIP_Lamar_Index_Rebuild_Script(`table_name`,start_date,finish_date)
select table_name,v_datetime,now() from temp_todo
;
-- select * from VIP_Lamar_Index_Rebuild_Script;
-- drop table VIP_Lamar_Index_Rebuild_Script;

DROP temporary TABLE if exists temp_todo;

END;
//
DELIMITER ;