Mysql資料庫大表歸檔操作

由於公司的某個系統資料表過億，考慮到資料表的壓力。所以根據某個時間點對資料表做了乙個歸檔。以下的操作是在當前的資料庫新建表用於儲存歷史資料，然後再對生產表做乙個清理操作。如果有條件的話可以把歸檔的資料放在一台新的資料庫伺服器上。（具體的表名和時間結點根據自己需要修改）

歸檔sql：

方法一：複製表並且按照條件插入資料（此種方法除了主鍵索引不包括其他索引）

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create table lime_survey_549656_20151001 as select * from lime_survey_549656 where submitdate < "2015-10-01 00:00:00";

alter table lime_survey_549656_20151001 change id id int primary key auto_increment;

create table lime_survey_186194_20151001 as select * from lime_survey_186194 where submitdate < "2015-10-01 00:00:00";

alter table lime_survey_186194_20151001 change id id int primary key auto_increment;

create table lime_survey_279575_20151001 as select * from lime_survey_279575 where submitdate < "2015-10-01 00:00:00";

alter table lime_survey_279575_20151001 change id id int primary key auto_increment;

方法二：建立一張空表，結構和索引和原表一樣

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create table lime_survey_549656_20151001 like lime_survey_549656;

insert into lime_survey_549656_20151001 select * from lime_survey_549656 where submitdate < "2015-10-01 00:00:00";

create table lime_survey_186194_20151001 like lime_survey_186194;

insert into lime_survey_186194_20151001 select * from lime_survey_186194 where submitdate < "2015-10-01 00:00:00";

create table lime_survey_279575_20151001 like lime_survey_279575;

insert into lime_survey_279575_20151001 select * from lime_survey_279575 where submitdate < "2015-10-01 00:00:00";

資料歸檔成功後清理資料sql:

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delete from lime_survey_549656 where submitdate < "2015-10-0100:00:00";

delete from lime_survey_186194 where submitdate < "2015-10-0100:00:00";

delete from lime_survey_279575 where submitdate < "2015-10-0100:00:00";