importjava.math.BigDecimal;publicclassConvertStringToBigDecimal{publicstaticvoidmain(String[]args){// 从数据库中获取的字符串类型数据StringmysqlString="123.45";// 将字符串类型数据转换成BigDecimal类型BigDecimalbigDecimal=newBigDecimal(mysqlString);System.out.println("转换后的BigDecimal数据为:"+bigDecimal);}}...
INSERTINTOexample(decimal_string)VALUES('123.45'),('67.89'),('1000.00');-- 向表中插入三个字符串,分别代表不同的Decimal数值 1. 2. 3. 4. 5. 步骤2:查询数据,将字符串转换为Decimal 要将字符串转换为Decimal,我们可以使用MySQL的CAST或CONVERT函数。这两个函数都可以实现类型转换,但CAST通常较为常用。...
If you are using a string in an arithmetic operation, this is converted to a floating-point number. If you convert a “zero” date string to a date, CONVERT() and CAST() return NULL when the NO_ZERO_DATE SQL mode is enabled. As of MySQL 5.0.4, they also produce a warning. 有关...
I have a table with a 2 fiels created using datatype tinytext, they hold the string values of decimal numbers or null. I want to execute a select statement containing an order by asc numerically. I have tried SELECT CAST(field1 AS DECIMAL), CAST(field2 AS DECIMAL) FROM tablename ...
如何将字符串转换为MySQL中的DECIMAL类型? 在MySQL中,使用CAST函数可以将字符串转换为DECIMAL类型吗? 使用CONVERT函数将字符串转为DECIMAL类型时需要注意什么? 我正在尝试将关于商品价格的数据从超文本标记语言表单插入到mySQL数据库中。输入字段定义如下: 代码语言:javascript 运行 AI代码解释 表单被POSTed转到下一页,在...
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
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)); ...
BINARY[(N)]CHAR[(N)]DATEDATETIMEDECIMALSIGNED [INTEGER]TIMEUNSIGNED [INTEGER] Navicat 实例: selectCONVERT(SYSDATE(),datetime) as datetime ,CONVERT(SYSDATE(),date) as date from dual; select cast(now() as char);select cast((1/3)*100 as UNSIGNED) as percent from dual;--result will be 33...
UNHEX() Return a string containing hex representation of a number UPPER() Convert to uppercase WEIGHT_STRING() Return the weight string for a stringNumeric Functions and OperatorsNameDescription ABS() Return the absolute value ACOS() Return the arc cosine ASIN() Return the arc sine ATAN() Re...
SELECT CAST(field1 AS DECIMAL), CAST(field2 AS DECIMAL) FROM tablename WHERE unqid = 10 ORDER BY field1, field2 ASC; didn't work. The string will be in a price format eg: 400.99 or 2.49. basically I need to obtain the lowest number first. ...