I know my resultset will only have one row. But I don't know about columns.
e.g.
func GetData(db *sql.DB, ent Entity, tableName, uniqueField string, value
interface{}) error {
query := fmt.Sprintf("SELECT * FROM %s WHERE %s = $1", tableName,
uniqueField)
row := db.QueryRow(query, value)
columns := []string{} // columns, err := row.Columns()
if err := row.Scan(ent.Pointers(columns)...); err != nil {
return err
}
return nil
}
On Saturday, August 14, 2021 at 5:08:12 AM UTC-3 Tamás Gulácsi wrote:
> It could, but what for? sql.Row is already a convenience wrapper for
> I-know-I-want-only-one-row,
> so you know what kind of data are you retrieving, but you know it's only
> one row?
>
> daniel...@omie.com.br a következőt írta (2021. augusztus 13., péntek,
> 19:04:24 UTC+2):
>
>> Yes i ever use Query() instead of QueryRow().
>> My doubt is more about the API design.
>> If exists *sql.Row with Scan() method why not implements Columns() ?
>>
>> On Thursday, August 5, 2021 at 3:43:44 PM UTC-3 eli...@gmail.com wrote:
>>
>>> In what case do you find the need to call Columns() on a Row? Generally
>>> if you have access to a Row, you also have access to a Rows, which does
>>> have a Columns() method.
>>>
>>> Eli
>>>
>>> On Thu, Aug 5, 2021 at 10:34 AM Daniel da Silva <dop...@gmail.com>
>>> wrote:
>>>
>>>> Hello guys!
>>>>
>>>> Why doesn't sql.Row implement the Columns() method?
>>>>
>>>> Thanks!
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google
>>>> Groups "golang-nuts" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>> an email to golang-nuts...@googlegroups.com.
>>>> To view this discussion on the web visit
>>>> https://groups.google.com/d/msgid/golang-nuts/1c521514-d267-456c-a66a-e56544965fd3n%40googlegroups.com
>>>>
>>>> <https://groups.google.com/d/msgid/golang-nuts/1c521514-d267-456c-a66a-e56544965fd3n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/aa0085f1-7057-40fb-9539-3c133331e152n%40googlegroups.com.
