package database/sql
NullFloat64 represents a float64 that may be null. NullFloat64 implements the Scanner interface so it can be used as a scan destination, similar to NullString.
Golang database/sql/#NullFloat64 type usage examples
Example 1:
var nf sql.NullFloat64{Float64: 42.42, Valid: true}
Example 2:
type TableWithNull struct {
Id int64
Str sql.NullString
Int64 sql.NullInt64
Float64 sql.NullFloat64
Bool sql.NullBool
Bytes []byte
}
Reference :
http://golang.org/pkg/database/sql/#NullFloat64
