Best Data Type For Storing Currency Values In A MySQL Database


Answer :

Something like Decimal(19,4) usually works pretty well in most cases. You can adjust the scale and precision to fit the needs of the numbers you need to store. Even in SQL Server, I tend not to use "money" as it's non-standard.


The only thing you have to watch out for is if you migrate from one database to another you may find that DECIMAL(19,4) and DECIMAL(19,4) mean different things

( http://dev.mysql.com/doc/refman/5.1/en/precision-math-decimal-changes.html )

    DBASE: 10,5 (10 integer, 5 decimal)     MYSQL: 15,5 (15 digits, 10 integer (15-5), 5 decimal)

Assaf's response of

Depends on how much money you got...

sounds flippant, but actually it's pertinant.

Only today we had an issue where a record failed to be inserted into our Rate table, because one of the columns (GrossRate) is set to Decimal (11,4), and our Product department just got a contract for rooms in some amazing resort in Bora Bora, that sell for several million Pacific Francs per night... something that was never anticpated when the database schema was designed 10 years ago.


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