Mysql批量创建表

需求描述

        我们操作日志表随着时间越长，数据量越大；要求日志表按月分表，产生的日志根据当前时间确定要存入的表名中；为了保险起见，提前创建三年的表；

例如表名：sys_oper_log_202301,sys_oper_log_202302。

需求实现

1、创建存储过程：

## 根据表结构定义创建
CREATE DEFINER=`root`@`localhost` PROCEDURE `createOperLogTables`()
BEGIN
	DECLARE
		var_num INT DEFAULT 0;
	WHILE
			var_num < 36 DO
			SET @sqlstr = CONCAT( "CREATE TABLE IF NOT EXISTS sys_oper_log_", date_format( date_add( curdate(), INTERVAL var_num MONTH ), '%Y%m' ), 
			"(`oper_id` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '日志主键',
				`title` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '模块标题',
				`business_type` int DEFAULT '0' COMMENT '业务类型（0其它 1新增 2修改 3删除）',
				`method` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '方法名称',
				`request_method` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '请求方式',
				`operator_type` int DEFAULT '0' COMMENT '操作类别（0其它 1后台用户 2手机端用户）',
				`oper_name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '操作人员',
				`dept_name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '部门名称',
				`oper_url` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '请求URL',
				`oper_ip` varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '主机地址',
				`oper_location` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '操作地点',
				`oper_param` varchar(2000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '请求参数',
				`json_result` varchar(2000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '返回参数',
				`status` int DEFAULT '0' COMMENT '操作状态（0正常 1异常）',
				`error_msg` varchar(2000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT '' COMMENT '错误消息',
				`oper_time` datetime DEFAULT NULL COMMENT '操作时间',
				`cost_time` bigint DEFAULT '0' COMMENT '消耗时间',
				PRIMARY KEY (`oper_id`) USING BTREE,
				KEY `idx_sys_oper_log_bt` (`business_type`) USING BTREE,
				KEY `idx_sys_oper_log_s` (`status`) USING BTREE,
				KEY `idx_sys_oper_log_ot` (`oper_time`) USING BTREE
			) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci ROW_FORMAT=DYNAMIC COMMENT='操作日志记录';" );
		PREPARE stmt 
		FROM
			@sqlstr;
		EXECUTE stmt;
		SET var_num = var_num + 1;
	END WHILE;

END;

## 根据模板表直接创建
CREATE DEFINER = `root` @`localhost` PROCEDURE `createOperLogTables2` () BEGIN
	DECLARE
		var_num INT DEFAULT 0;
	WHILE
			var_num < 36 DO
			
			SET @sqlstr = CONCAT( "CREATE TABLE IF NOT EXISTS sys_oper_log_", date_format( date_add( curdate(), INTERVAL var_num MONTH ), '%Y%m' ), " like sys_oper_log" );
		PREPARE stmt 
		FROM
			@sqlstr;
		EXECUTE stmt;
		
		SET var_num = var_num + 1;
		
	END WHILE;

END;

 

2、执行之后会在函数中出现 createOperLogTables  createOperLogTables2  这个函数。 

3、执行 createOperLogTables   createOperLogTables2 ：

CALL createOperLogTables();

CALL createOperLogTables2();