Integrate new database/sql features introduced in Go 1.15
Once we can rely exclusively on Go >=1.15 we should add support for the new database/sql features introduced in Go 1.15 (https://golang.org/doc/go1.15#database/sql).
Once we can rely exclusively on Go >=1.15 we should add support for the new database/sql features introduced in Go 1.15 (https://golang.org/doc/go1.15#database/sql).