create table TempComments Like dycomments;

上述 SQL語句創建的新表帶有原表的所有屬性，主鍵，索引等。

自動分表怎么做呢？

使用上述語句自動創建分表。

那么ID怎么設置呢？

更改表格自增主鍵的起始值 例如 表格為? xxx_201604 那么將起始值設為201604000000000000000

//具體操作

1.創建模板表格，如上述Sql語句

2.設置Mysql 允許執行事件

SET GLOBAL event_scheduler = 1;

3.創建事件，自動分表

CREATE DEFINER=`root`@`%` EVENT `Event_SpliteTable_Comments`

ON SCHEDULE

EVERY 1 MINUTE STARTS '2019-06-01'

ON COMPLETION PRESERVE

ENABLE

COMMENT '自動創建下個dycomments_YYYYMM表'

DO BEGIN

SET @NextTailStr = DATE_FORMAT(DATE_ADD(NOW(),INTERVAL 1 MONTH), '%Y%m');

-- create table TempComments Like dycomments;

SET @createEventSQL = CONCAT('create table dycomments_',CAST(@NextTailStr AS CHAR),' Like TempComments;');

-- ALTER TABLE person201604211757 AUTO_INCREMENT=201604000000000000000;

SET @alterEventSql = CONCAT('ALTER TABLE dycomments_',CAST(@NextTailStr AS CHAR),' AUTO_INCREMENT = ',CAST(@NextTailStr AS CHAR),'000000000000000;');

SELECT @createEventSQL;

PREPARE CreateEventStatement FROM @createEventSQL;

EXECUTE CreateEventStatement;

SELECT @alterEventSql;

PREPARE AlterEventStatement FROM @createEventSQL;

EXECUTE AlterEventStatement;

END