For example is it possible to ensure that a particular number field is always rounded to exactly three decimal places?
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For example is it possible to ensure that a particular number field is always rounded to exactly three decimal places?
Yes. Define the column as
DECIMAL(16, 3)– see the postgres documentation for this typeThe first number (16 in this case) is the maximum total number of digits in the number, the second number (3 in this case) is the number of decimal places.
Every database (I know of) supports this datatype.