阿里云
>
mysql
>
mysql数据类型介绍
mysql数据类型介绍
MySQL数据类型介绍
MySQL数据类型介绍
一、数据类型
MySQL
支持多种数据类型,主要有数值类型、日期/时间类型和字符串类型。数值数据类型 整数类型:TINYINT、SMALLINT、MEDIUMINT、INT、BIGINT 浮点数类型:FLOAT、DOUBLE 定点小数:DECIMAL 日期/时间类型 ...
MySQL
常用
数据类型介绍
一、数字
类型
数字
类型
按照我的分类方法分为三
类
:整数
类
、小数
类
和数字
类
。我所谓的“数字
类
”,就是指 DECIMAL 和 NUMERIC,它们是同一种
类型
。它严格的说不是一种数字
类型
,因为他们实际上是将数字以字符串形式保存的;他的值的每一位...
3、
MySQL
的
数据类型介绍
4、定义
数据类型
实际是定义表中的列 二、
数据库
类型的分类
数据库
的分类可以分为数值类型,字符
型
,日期
型
、文本
型
TEXT及复合
型
。2.1 数值
型
2.1.1 整型 tinyint(-127~128之间的整数)smallint(短整型:(-32768~32767)数值占用2字节,用带...
关于
mysql
5.7版本新特性
介绍
-
数据类型
JSON*
关于
mysql
5.7版本新特性
介绍
-
数据类型
JSON 测试环境:Win10、
mysql
5.7.14 内容简介:随着
mysql
5.7版本的到来,大家对其的热情也越来越高涨,身为
mysql
圈子里的一员,我本身也对
mysql
5.7的一些新特性有所了解,通过学习了解到了很多新的...
1
mysql更多"介绍"相关
.
mysqlindex介绍
.
mysqlhash介绍
.
mysqlmyrocks介绍
.
mysql分区介绍
.
mysql权限介绍
.
mysql介绍源码剖析
.
mysql使用介绍
.
mysql参数介绍
.
mysql存储引擎介绍
.
mysqlsql介绍
.
安装mysql介绍
mysql数据类型介绍相关内容
.
mysql可变长数据类型
.
mysql数据类型tinyint
.
mysql学习心得数据类型
.
mysql数据类型对应表
.
mysql数据类型配置
.
数据类型默认值mysql
.
mysql设置数据类型
.
mysql数据类型操作数据
.
mysql数据类型实战
.
mysql学习笔记数据类型
.
mysqlint数据类型
.
mysql数据类型长度
.
mysql字符串数据类型
.
mysql使用数据类型
您可能感兴趣
.
常用mysql
.
mysql触发器
.
修改mysql密码
.
mysql云服务器
.
mysql动态sql
.
mysql事务
.
mysql复制
.
mysql学习
{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":4,"count":4}]},"card":[{"des":"阿里云数据库专家保驾护航,为用户的数据库应用系统进行性能和风险评估,参与配合进行数据压测演练,提供数据库优化方面专业建议,在业务高峰期与用户共同保障数据库系统平稳运行。","link1":"https://www.aliyun.com/service/optimization/database","link":"https://www.aliyun.com/service/chiefexpert/database","icon":"https://img.alicdn.com/tfs/TB1a5ZfonnI8KJjy0FfXXcdoVXa-100-100.png","btn2":"数据库紧急救援服务","tip":"还有更多专家帮助您解决云上业务问题:
立即查看
","btn1":"云上数据库优化服务","link2":"https://www.aliyun.com/service/databaserescue","title":"数据库专家服务"}],"search":[{"txt":"安全首席专家","link":"https://www.aliyun.com/service/chiefexpert/security"},{"txt":"中间件首席专家","link":"https://www.aliyun.com/service/chiefexpert/middleware"},{"txt":"系统与平台首席专家","link":"https://www.aliyun.com/service/chiefexpert/platform"},{"txt":"存储首席专家","link":"https://www.aliyun.com/service/chiefexpert/storage"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/rds/mysql","icon":"","contentLink":"https://www.aliyun.com/product/rds/mysql","title":"云数据库RDS MySQL版","des":"MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。","btn1":"了解详情","link1":"https://www.aliyun.com/product/rds/mysql","btn2":"管理控制台","link2":"https://rdsnext.console.aliyun.com/#/rdsList/cn-hangzhou/basic/","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?spm=5176.8789780.7y9jhqsfz.115.47ea55caeL2Mfu&from=OVtXEBmlH8","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MySQL2核4G 8.8元/月","firstContentLink":"https://rdsbuy.console.aliyun.com/create/rds/mysql?initData={%22data%22:{%22rds_dbtype%22:%22mysql%22,%22rds_dbversion%22:%228.0%22,%22rds_class%22:%22mysql.n2.medium.1%22,%22rds_storage%22:%2220%22,%22rds_nodetype%22:%22Basic%22,%22duration%22:1}}","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentName":"帮助文档","firstContentLink":"https://help.aliyun.com/product/26090.html","lastContentName":"快速入门","lastContentLink":"https://help.aliyun.com/document_detail/26174.html"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"SaaS上云数据库","firstContentLink":"https://www.aliyun.com/solution/database/saasdb","lastContentName":"数据库客户案例合集","lastContentLink":"https://www.aliyun.com/database/case"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"云数据库PolarDB","lastContentName":"云原生数据仓库MySQL","firstContentLink":"https://www.aliyun.com/product/polardb","lastContentLink":"https://www.aliyun.com/product/ads"}}],"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i4/O1CN01okTDy31OzS9njXqrV_!!6000000001776-2-tps-48-48.png"}],"visual":{"textColor":"dark","topbg":""}}
{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":4,"count":4}]},"card":[{"des":"阿里云数据库专家保驾护航,为用户的数据库应用系统进行性能和风险评估,参与配合进行数据压测演练,提供数据库优化方面专业建议,在业务高峰期与用户共同保障数据库系统平稳运行。","link1":"https://www.aliyun.com/service/optimization/database","link":"https://www.aliyun.com/service/chiefexpert/database","icon":"https://img.alicdn.com/tfs/TB1a5ZfonnI8KJjy0FfXXcdoVXa-100-100.png","btn2":"数据库紧急救援服务","tip":"还有更多专家帮助您解决云上业务问题:
立即查看
","btn1":"云上数据库优化服务","link2":"https://www.aliyun.com/service/databaserescue","title":"数据库专家服务"}],"search":[{"txt":"安全首席专家","link":"https://www.aliyun.com/service/chiefexpert/security"},{"txt":"中间件首席专家","link":"https://www.aliyun.com/service/chiefexpert/middleware"},{"txt":"系统与平台首席专家","link":"https://www.aliyun.com/service/chiefexpert/platform"},{"txt":"存储首席专家","link":"https://www.aliyun.com/service/chiefexpert/storage"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/rds/mysql","icon":"","contentLink":"https://www.aliyun.com/product/rds/mysql","title":"云数据库RDS MySQL版","des":"MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。","btn1":"了解详情","link1":"https://www.aliyun.com/product/rds/mysql","btn2":"管理控制台","link2":"https://rdsnext.console.aliyun.com/#/rdsList/cn-hangzhou/basic/","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?spm=5176.8789780.7y9jhqsfz.115.47ea55caeL2Mfu&from=OVtXEBmlH8","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MySQL2核4G 8.8元/月","firstContentLink":"https://rdsbuy.console.aliyun.com/create/rds/mysql?initData={%22data%22:{%22rds_dbtype%22:%22mysql%22,%22rds_dbversion%22:%228.0%22,%22rds_class%22:%22mysql.n2.medium.1%22,%22rds_storage%22:%2220%22,%22rds_nodetype%22:%22Basic%22,%22duration%22:1}}","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentName":"帮助文档","firstContentLink":"https://help.aliyun.com/product/26090.html","lastContentName":"快速入门","lastContentLink":"https://help.aliyun.com/document_detail/26174.html"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"SaaS上云数据库","firstContentLink":"https://www.aliyun.com/solution/database/saasdb","lastContentName":"数据库客户案例合集","lastContentLink":"https://www.aliyun.com/database/case"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"云数据库PolarDB","lastContentName":"云原生数据仓库MySQL","firstContentLink":"https://www.aliyun.com/product/polardb","lastContentLink":"https://www.aliyun.com/product/ads"}}],"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i4/O1CN01okTDy31OzS9njXqrV_!!6000000001776-2-tps-48-48.png"}],"visual":{"textColor":"dark","topbg":""}}}
云数据库RDS MySQL版
MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。
了解详情
管理控制台
在线咨询
最新活动
MySQL2核4G 8.8元/月
数据库专场优惠
快速入门
帮助文档
快速入门
最佳实践
SaaS上云数据库
数据库客户案例合集
产品推荐
云数据库PolarDB
云原生数据仓库MySQL
{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":4,"count":4}]},"card":[{"des":"阿里云数据库专家保驾护航,为用户的数据库应用系统进行性能和风险评估,参与配合进行数据压测演练,提供数据库优化方面专业建议,在业务高峰期与用户共同保障数据库系统平稳运行。","link1":"https://www.aliyun.com/service/optimization/database","link":"https://www.aliyun.com/service/chiefexpert/database","icon":"https://img.alicdn.com/tfs/TB1a5ZfonnI8KJjy0FfXXcdoVXa-100-100.png","btn2":"数据库紧急救援服务","tip":"还有更多专家帮助您解决云上业务问题:
立即查看
","btn1":"云上数据库优化服务","link2":"https://www.aliyun.com/service/databaserescue","title":"数据库专家服务"}],"search":[{"txt":"安全首席专家","link":"https://www.aliyun.com/service/chiefexpert/security"},{"txt":"中间件首席专家","link":"https://www.aliyun.com/service/chiefexpert/middleware"},{"txt":"系统与平台首席专家","link":"https://www.aliyun.com/service/chiefexpert/platform"},{"txt":"存储首席专家","link":"https://www.aliyun.com/service/chiefexpert/storage"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/rds/mysql","icon":"","contentLink":"https://www.aliyun.com/product/rds/mysql","title":"云数据库RDS MySQL版","des":"MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。","btn1":"了解详情","link1":"https://www.aliyun.com/product/rds/mysql","btn2":"管理控制台","link2":"https://rdsnext.console.aliyun.com/#/rdsList/cn-hangzhou/basic/","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?spm=5176.8789780.7y9jhqsfz.115.47ea55caeL2Mfu&from=OVtXEBmlH8","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MySQL2核4G 8.8元/月","firstContentLink":"https://rdsbuy.console.aliyun.com/create/rds/mysql?initData={%22data%22:{%22rds_dbtype%22:%22mysql%22,%22rds_dbversion%22:%228.0%22,%22rds_class%22:%22mysql.n2.medium.1%22,%22rds_storage%22:%2220%22,%22rds_nodetype%22:%22Basic%22,%22duration%22:1}}","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentName":"帮助文档","firstContentLink":"https://help.aliyun.com/product/26090.html","lastContentName":"快速入门","lastContentLink":"https://help.aliyun.com/document_detail/26174.html"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"SaaS上云数据库","firstContentLink":"https://www.aliyun.com/solution/database/saasdb","lastContentName":"数据库客户案例合集","lastContentLink":"https://www.aliyun.com/database/case"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"云数据库PolarDB","lastContentName":"云原生数据仓库MySQL","firstContentLink":"https://www.aliyun.com/product/polardb","lastContentLink":"https://www.aliyun.com/product/ads"}}],"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i4/O1CN01okTDy31OzS9njXqrV_!!6000000001776-2-tps-48-48.png"}],"visual":{"textColor":"dark","topbg":""}}
{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":4,"count":4}]},"card":[{"des":"阿里云数据库专家保驾护航,为用户的数据库应用系统进行性能和风险评估,参与配合进行数据压测演练,提供数据库优化方面专业建议,在业务高峰期与用户共同保障数据库系统平稳运行。","link1":"https://www.aliyun.com/service/optimization/database","link":"https://www.aliyun.com/service/chiefexpert/database","icon":"https://img.alicdn.com/tfs/TB1a5ZfonnI8KJjy0FfXXcdoVXa-100-100.png","btn2":"数据库紧急救援服务","tip":"还有更多专家帮助您解决云上业务问题:
立即查看
","btn1":"云上数据库优化服务","link2":"https://www.aliyun.com/service/databaserescue","title":"数据库专家服务"}],"search":[{"txt":"安全首席专家","link":"https://www.aliyun.com/service/chiefexpert/security"},{"txt":"中间件首席专家","link":"https://www.aliyun.com/service/chiefexpert/middleware"},{"txt":"系统与平台首席专家","link":"https://www.aliyun.com/service/chiefexpert/platform"},{"txt":"存储首席专家","link":"https://www.aliyun.com/service/chiefexpert/storage"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/rds/mysql","icon":"","contentLink":"https://www.aliyun.com/product/rds/mysql","title":"云数据库RDS MySQL版","des":"MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。","btn1":"了解详情","link1":"https://www.aliyun.com/product/rds/mysql","btn2":"管理控制台","link2":"https://rdsnext.console.aliyun.com/#/rdsList/cn-hangzhou/basic/","btn3":"在线咨询","link3":"https://www.aliyun.com/core/online-consult?spm=5176.8789780.7y9jhqsfz.115.47ea55caeL2Mfu&from=OVtXEBmlH8","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"MySQL2核4G 8.8元/月","firstContentLink":"https://rdsbuy.console.aliyun.com/create/rds/mysql?initData={%22data%22:{%22rds_dbtype%22:%22mysql%22,%22rds_dbversion%22:%228.0%22,%22rds_class%22:%22mysql.n2.medium.1%22,%22rds_storage%22:%2220%22,%22rds_nodetype%22:%22Basic%22,%22duration%22:1}}","lastContentName":"数据库专场优惠","lastContentLink":"https://www.aliyun.com/database/dbfirstbuy"}},{"infoName":"快速入门","infoContent":{"firstContentName":"帮助文档","firstContentLink":"https://help.aliyun.com/product/26090.html","lastContentName":"快速入门","lastContentLink":"https://help.aliyun.com/document_detail/26174.html"}},{"infoName":"最佳实践","infoContent":{"firstContentName":"SaaS上云数据库","firstContentLink":"https://www.aliyun.com/solution/database/saasdb","lastContentName":"数据库客户案例合集","lastContentLink":"https://www.aliyun.com/database/case"}},{"infoName":"产品推荐","infoContent":{"firstContentName":"云数据库PolarDB","lastContentName":"云原生数据仓库MySQL","firstContentLink":"https://www.aliyun.com/product/polardb","lastContentLink":"https://www.aliyun.com/product/ads"}}],"ifIcon":"img","iconImg":"https://img.alicdn.com/imgextra/i4/O1CN01okTDy31OzS9njXqrV_!!6000000001776-2-tps-48-48.png"}],"visual":{"textColor":"dark","topbg":""}}}
云数据库RDS MySQL版
MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。
了解详情
管理控制台
在线咨询
最新活动
MySQL2核4G 8.8元/月
数据库专场优惠
快速入门
帮助文档
快速入门
最佳实践
SaaS上云数据库
数据库客户案例合集
产品推荐
云数据库PolarDB
云原生数据仓库MySQL