在postgresql中将双精度转换为货币

Question

我无法将双精度值转化为金钱。

SELECT scrap_cost.year AS year
, scrap_cost.weekly AS week
, scrap_cost.scrap_cost::MONEY
, labor_cost.labor_cost::MONEY
FROM ...

返回

ERROR:  cannot cast type double precision to money
LINE 4: ..., scrap_cost.scrap_cost::MONEY, labor_cost.labor_cost::money
                                                            ^
********** Error **********

ERROR: cannot cast type double precision to money
SQL state: 42846
Character: 117

Answer 1

我要解决的问题是将其作为numeric第一个

SELECT 
    scrap_cost.year AS year
    , scrap_cost.weekly AS week
    , scrap_cost.scrap_cost::MONEY 
    , labor_cost.labor_cost::NUMERIC::MONEY
FROM ...

我在postgres documentation

中找到了解决方案