MySQL建表报错Invalid default value for ‘begin_time‘ - 报错信息

我在建表的时候：

	DROP TABLE IF EXISTS `tb_blog`;
	CREATE TABLE `tb_blog` (
	`id` bigint(20) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '主键',
	`shop_id` bigint(20) NOT NULL COMMENT '商户id',
	`user_id` bigint(20) UNSIGNED NOT NULL COMMENT '用户id',
	`title` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '标题',
	`images` varchar(2048) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '探店的照片，最多9张，多张以\",\"隔开',
	`content` varchar(2048) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '探店的文字描述',
	`liked` int(8) UNSIGNED NULL DEFAULT 0 COMMENT '点赞数量',
	`comments` int(8) UNSIGNED NULL DEFAULT NULL COMMENT '评论数量',
	`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
	`update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
	PRIMARY KEY (`id`) USING BTREE
	) ENGINE = InnoDB AUTO_INCREMENT = 23 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Compact;

执行这段语句报错，报错信息为：这个报错是由于 MySQL 的严格模式导致的，解决方式：在命令行中执行 sql_mode:

SET SESSION sql_mode ='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

这样再执行 SQL 语句就不会报错了。