MySQL 教义 2 - 浮点数的小数点后 2 位?
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Doctrine 2 - 2 decimal places on a float?
提问by Tool
Annotation:
注解:
/**
* @ORM\Column(type="float", scale="2")
*/
protected $curr_price;
I'm using it with Symfony 2.
我在 Symfony 2 中使用它。
And this field becomes a double in MySQL database instead of float with 2 point precision.
并且该字段在 MySQL 数据库中变为双精度值,而不是具有 2 点精度的浮点数。
What am I doing wrong? I tried deleting the DB, reinserting etc...
我究竟做错了什么?我尝试删除数据库,重新插入等...
回答by gilden
Both precision
and scale
properties work only with the decimal
mapping type (link). I suggest you use the decimal
type.
既precision
和scale
性能仅与工作decimal
映射类型(链接)。我建议你使用decimal
类型。
As to why it's creating a double field instead of float, I'm not entirely sure. It probably has to do with being compatible with all supported databases. I see no mention of double
mapping type so I assume they use the same type for both.
至于为什么它创建一个双字段而不是浮动,我不完全确定。它可能与与所有支持的数据库兼容有关。我没有提到double
映射类型,所以我假设它们对两者使用相同的类型。
回答by juan
in the *.yml
在 *.yml 中
curr_price:
type: decimal
precision: 10
scale: 2
回答by Serhii Polishchuk
/**
* @ORM\Column(type="float", scale=2)
*/
protected $curr_price;
scale should be an integer, and you are using a string
scale 应该是一个整数,你使用的是一个字符串