question about the "database/sql" package.

[sina safari]

Hi, I have a question about the "database/sql" package.

Why doesn't the "Open" function take the "driver.Driver" interface instead of the driver name?

like this:

func Open(driveri driver.Driver, dataSourceName string) (*DB, error)

what's the reason?

[Axel Wagner]

There is an argument to be made that this allows code using `database/sql` to take the arguments to `Open` directly from an environment variable/config file and pass them on, to support multiple DBMS. But really, it would have probably been a better design to directly take the Driver, yes. However, this was a decision made a long time ago and we can't really change it now.

Note that there is `sql.OpenDB`, which is pretty much doing what you expect.

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