string strChinese = Console.ReadLine(); //输入用户的数学成绩 Console.WriteLine("请输入您的数学成绩:"); string strMath = Console.ReadLine(); //输入用户的英语成绩 Console.WriteLine("请输入您的英语成绩:"); string strEnglish = Console.ReadLine(); //强制转换 int chinese = Convert.ToInt32(str...
# mysql中查询如何将Decimal转为字符串 在MySQL中,可以使用CAST函数或CONVERT函数将Decimal类型的数据转换为字符串类型。以下是使用这两个函数的例子: ## 使用CAST函数将Decimal转为字符串 ```sql SELECT CAST(decimal_column AS CHAR) AS decimal_string FROM table_name; ``` 原创 151 阅读 点赞 评论 java ...
6,日期时间型 : DATETIME 7,浮点数 : DECIMAL 8,整数 : SIGNED 9,无符号整数 : UNSIGNED 附2, To cast a string to a numeric value in numeric context, you normally do not have to do anything other than to use the string value as though it were a number: 复制代码 代码示例: mysql> SELEC...
numeric类型: pg和mysql一样都支持decimal,numeric类型来表示浮点数。两者的区别在于:mysql中的numeric类型整数和小数部分均最大支持65digits。 而pg中numeric类型支持的最大范围是: [左131072,右16383]digits。 例如: mysql中 mysql> create table t1(id numeric(66,1)); ERROR 1426 (42000): Too-big precision...
If you convert a “zero” date string to a date,CONVERT()andCAST()returnNULLwhen theNO_ZERO_DATESQL mode is enabled. As of MySQL 5.0.4, they also produce a warning. Previous/Next/Up/Table of Contents
CONVERT(expr,type);orCAST(expr AS type)//二者功能相似 The type can be one of the following values : BINARY[(N)]CHAR[(N)]DATEDATETIMEDECIMALSIGNED [INTEGER]TIMEUNSIGNED [INTEGER] Navicat 实例: selectCONVERT(SYSDATE(),datetime) as datetime ,CONVERT(SYSDATE(),date) as date from dual; ...
SEC_TO_TIME(second)函数和TIME_TO_SEC(time)函数互为反函数 8、计算日期和时间的函数 MYSQL里计算日期和时间的函数比较多 增加日期:DATE_ADD(date,interval expr type),ADDDATE(date,interval expr type) 减去日期:DATE_SUB(date,interval expr type),SUBDATE(date,interval expr type) ...
(well… after having changed its default to a decimal point!), I get the result correctly spreaded in three contiguous cells, and with the right string (left) and number (right) alignment! Given the huge amount of information which even now gets alive in our systems passing from CSV or ...
定点类型DECIMALDECIMAL NUMERICNUMERIC 浮点类型REALFLOAT DOUBLEDOUBLE FLOATFLOAT BIT 类型BITBIT 字符类型CHARCHAR NCHARCHAR VARCHARVARCHAR BINARYBINARY VARBINARYVARBINARY LONG VARBINARYBLOB 时间类型YEARYEAR DATEDATE TIMETIME TIMESTAMPTIMESTAMP DATETIMEDATETIME ...
op_type STRING METADATA FROM 'op_type' VIRTUAL, -- 读取变更类型。 order_id INT, order_date TIMESTAMP(0), customer_name STRING, price DECIMAL(10, 5), product_id INT, order_status BOOLEAN, PRIMARY KEY(order_id) NOT ENFORCED ) WITH ( 'connector' = 'mysql-cdc', 'hostname' = 'localh...