COLLATE是用来做什么的？...各种COLLATE的区别 COLLATE通常是和数据编码（CHARSET）相关的，一般来说每种CHARSET都有多种它所支持的COLLATE，并且每种CHARSET都指定一种COLLATE为默认值。...COLLATE=utf8mb4_unicode_ci; 如果表级别没有设置CHARSET和COLLATE，则表级别会继承库级别的CHARSET与COLLATE。...也就是说列上所指定的COLLATE可以覆盖表上指定的COLLATE，表上指定的COLLATE可以覆盖库级别的COLLATE。如果没有指定，则继承下一级的设置。...即列上面没有指定COLLATE，则该列的COLLATE和表上设置的一样。 以上就是关于mysql的COLLATE相关知识。
各种 COLLATE 的区别 COLLATE通常是和数据编码（CHARSET）相关的，一般来说每种CHARSET都有多种它所支持的 COLLATE，并且每种 CHARSET 都指定一种COLLATE为默认值...; 如果库级别没有设置CHARSET和COLLATE，则库级别默认的CHARSET和COLLATE使用实例级别的设置。...COLLATE=utf8mb4_unicode_ci; 如果表级别没有设置 CHARSET 和 COLLATE，则表级别会继承库级别的CHARSET与COLLATE。...也就是说列上所指定的 COLLATE 可以覆盖表上指定的 COLLATE，表上指定的COLLATE可以覆盖库级别的 COLLATE。如果没有指定，则继承下一级的设置。...即列上面没有指定 COLLATE，则该列的COLLATE和表上设置的一样。 以上就是关于 mysql 的 COLLATE 相关知识。
SHOW FULL COLUMNS FROM ; # 查看collation类型 alter table convert to character set utf8 collate
诡异的R包Hmisc安装错误: unexpected '<'1: < ^ ERROR: unable to collate and parse R files for package 这是安装包的结尾字符和安装平台不一致导致的
2 不同的collate 是否可以比较大小 ？...select *,name1 COLLATE "C" < name2 COLLATE "C" as compare from collates; 可以看到如果是使用同样的collate 是可以比较大大小的...那么我们两个不同的COLLATE来进行比较会怎么样，看下图也很清楚，两个不同的 collate 是无法比较的。 3 创建数据库的时候，选择的collate 和 ctypte 是否可以改变 ？...是 en_US.utf8 其他的字符字段是C 在POSTGRESQL 中表是不能自己设置自己的collate,但是针对与表中的列是可以设置collate的。...collate, ctype 等。
utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT '备注', `mobile` varchar(30) CHARACTER SET utf8mb4 COLLATE...utf8mb4_unicode_ci NOT NULL, `email` varchar(40) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci...NULL, `openId` varchar(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL,...DEFAULT NULL, `province` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT...` varchar(512) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL, `avialable` int(
, `code` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `guarantee_date` varchar(255) COLLATE...`remark` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `sell_factory` varchar(255) COLLATE...`shelves_id` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `title` varchar(255) COLLATE...` ( `id` varchar(255) COLLATE utf8mb3_croatian_ci NOT NULL, `create_by` varchar(255) COLLATE utf8mb3...NULL, `title` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `type` varchar(255) COLLATE
varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `guarantee_date` varchar(255) COLLATE utf8mb3...` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `title` varchar(255) COLLATE utf8mb3_croatian_ci...) COLLATE utf8mb3_croatian_ci NOT NULL, `create_by` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT..., `title` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `type` varchar(255) COLLATE utf8mb3...`code` varchar(255) COLLATE utf8mb3_croatian_ci DEFAULT NULL, `remark` varchar(255) COLLATE utf8mb3_
40100 DEFAULT CHARACTER SET utf8 COLLATE utf8_bin */; USE `kafka_center`; -- Dumping structure for...utf8_bin NOT NULL DEFAULT '', `consummer_group` varchar(255) COLLATE utf8_bin NOT NULL DEFAULT '',..., `dispause` int(11) DEFAULT NULL, `mail_to` varchar(1000) COLLATE utf8_bin NOT NULL DEFAULT '',...0, `kafka_version` varchar(10) COLLATE utf8_bin DEFAULT '', `location` varchar(255) COLLATE utf8...(255) COLLATE utf8_bin NOT NULL DEFAULT '', `role` varchar(255) COLLATE utf8_bin NOT NULL DEFAULT '
`varchar(64) COLLATE utf8_bin NOT NULL, `index_name`varchar(64) COLLATE utf8_bin NOT NULL, `last_update...', `Master_log_name`text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT 'The name of themaster...', `Ssl_capath`text CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'The path to the CertificateAuthority...', `Ssl_cert`text CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'The name of the SSLcertificate file....', `Ssl_key`text CHARACTER SET utf8 COLLATE utf8_bin COMMENT 'The name of the SSL keyfile.
` longtext COLLATE utf8_bin NOT NULL COMMENT 'content', `md5` varchar(32) COLLATE utf8_bin DEFAULT...ip', `app_name` varchar(128) COLLATE utf8_bin DEFAULT NULL, `tenant_id` varchar(128) COLLATE utf8...(64) COLLATE utf8_bin DEFAULT NULL, `c_schema` text COLLATE utf8_bin, PRIMARY KEY (`id`) USING BTREE...', `datum_id` varchar(255) COLLATE utf8_bin NOT NULL COMMENT 'datum_id', `content` longtext COLLATE...) COLLATE utf8_bin NOT NULL COMMENT 'tag_id', `app_name` varchar(128) COLLATE utf8_bin DEFAULT NULL
utf8mb4_unicode_ci NOT NULL COMMENT '订单编号', `order_sn` varchar(100) COLLATE utf8mb4_unicode_ci NOT...utf8mb4_unicode_ci NOT NULL DEFAULT '0' COMMENT '是否是套餐', `is_integral` enum('0','1') COLLATE utf8mb4..._unicode_ci NOT NULL COMMENT '收货人姓名', `consignee_telphone` varchar(255) COLLATE utf8mb4_unicode_ci...NOT NULL COMMENT '联系电话', `consignee_telphone2` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL...', `consignee_zip` int(11) NOT NULL COMMENT '邮政编码', `logistics_type` varchar(255) COLLATE utf8mb4
utf8_unicode_ci default null comment '联系人姓名', addressDesc varchar(50) collate utf8_unicode_ci default...(20) collate utf8_unicode_ci default null comment '联系人电话', createdBy bigint default null comment '创建者...utf8_unicode_ci default null comment '账单编码', productName varchar(20) collate utf8_unicode_ci default...varchar(10) collate utf8_unicode_ci default null comment '商品单位', productCount decimal(20,2) default...varchar(20) collate utf8_unicode_ci default null comment '供应商联系人', proPhone varchar(20) collate utf8
` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL, `web_hook` varchar(255) COLLATE utf8mb4_general_ci...utf8mb4_general_ci DEFAULT NULL, `job_name` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL,...`job_params` longtext COLLATE utf8mb4_general_ci, `lifecycle` varchar(255) COLLATE utf8mb4_general_ci...DEFAULT NULL, `log_config` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL, `max_instance_num..., `processor_type` int DEFAULT NULL, `status` int DEFAULT NULL, `tag` varchar(255) COLLATE utf8mb4
utf8mb4_unicode_ci NOT NULL, `events` text COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '事件详情', `...result` text COLLATE utf8mb4_unicode_ci COMMENT '结果详情', `created_at` timestamp NULL DEFAULT NULL,...utf8mb4_unicode_ci NOT NULL COMMENT '订单编号', `order_sn` varchar(100) COLLATE utf8mb4_unicode_ci NOT...utf8mb4_unicode_ci DEFAULT NULL COMMENT '审核原因', `note` text COLLATE utf8mb4_unicode_ci COMMENT '备注...utf8mb4_unicode_ci DEFAULT NULL COMMENT '物流单号', `consignee_realname` varchar(255) COLLATE utf8mb4_
utf8_general_ci NOT NULL COMMENT '管理员登陆名称', `login_password` varchar(50) CHARACTER SET utf8 COLLATE...utf8_general_ci NOT NULL COMMENT '管理员登陆密码', `nick_name` varchar(50) CHARACTER SET utf8 COLLATE utf8...utf8_general_ci NOT NULL COMMENT '博客标题', `blog_sub_url` varchar(200) CHARACTER SET utf8 COLLATE utf8...utf8_general_ci NOT NULL COMMENT '博客封面图', `blog_content` mediumtext CHARACTER SET utf8 COLLATE utf8...utf8_general_ci NOT NULL COMMENT '博客分类(冗余字段)', `blog_tags` varchar(200) CHARACTER SET utf8 COLLATE
NULL DEFAULT NULL, `fullname` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT...NULL, `mobile` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, PRIMARY...KEY (`id`) USING BTREE ) ENGINE = InnoDB CHARACTER SET = latin1 COLLATE = latin1_swedish_ci ROW_FORMAT...utf8_general_ci NOT NULL, `role_name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL..., `create_time` datetime(0) NULL DEFAULT NULL, `creator` varchar(255) CHARACTER SET utf8 COLLATE
slave_worker_info* 3.重新创建上述系统表 CREATE TABLE `innodb_index_stats` ( `database_name` varchar(64) COLLATE...utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `index_name` varchar(64...) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE...NOT NULL, `sample_size` bigint(20) unsigned DEFAULT NULL, `stat_description` varchar(1024) COLLATE...utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `last_update` timestamp
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