如果插入的数据小数点位数比scale大,则对scale+1位置的小数进行四舍五入。例如:99.94存储为99.9,99.95提示溢出,99.949存储为99.9(注意,不是这样的四舍五入逻辑哦:99.949=>99.95=>100.0。只看scale后面的一位。) 看一些例子,加深印象: mysql> create table test (a decimal(3,3)); Query OK, 0 rows affected...
导致两个版本的Hive在进行Decimal类型的数据计算时存在差异，主要体现在计算结果精度缺失。本篇文章主要从...
"multipleOf": 0.0001certainly covers the maxScale use-cases. If, however, there is value for JSON Schema to address scale more specifically, it may make sense to cover both sides. If there remains no equivalency for minScale in JSON Schema, that constraint would likely get dropped altogether ...
It has the same definition for scale if the scale is zero or positive and for precision if the decimal is <= -1 or >= 1. But if the decimal is in (-1, 1), precision can be smaller than scale. For example, for both "0.005" and ".005", it returns (precision=1, scale=3). ...
Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2.In SQL Server, the default maximum precision of numeric and decimal data types is 38....
:scale 运行 change_column 迁移时,它们实际上并不影响模式或数据库,但是 db:migrate 运行没有错误。 我的迁移文件如下所示: class ChangePrecisionAndScaleOfPaybackPeriodInTags < ActiveRecord::Migration def self.up change_column :tags, :payback_period, :decimal, { :scale => 3, :precision => 10 }...
same number of decimal places as in the United Nations scale or scales; rates of assessment for Associate Members shall be rounded off to one additional decimal place, as necessary, in order to [...] unesdoc.unesco.org (e) 会员国会费分摊比率小数点舍入的数位与联合国比额表小数点舍入的...
字符串 当然，你也可以使用/Column DSL函数。
Problem You are trying to cast a value of one or greater as a DECIMAL using equal values for both precision and scale. A null value is returned instead of
Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2. In SQL Server, the default maximum precision of numeric and decimal data types is 38....