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SQL driver ScanType() returns empty interface #108

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@clarkmcc

When I run the following code, the ScanType() always returns an empty interface

rows, err := db.QueryContext(ctx, query)
if err != nil {
	return nil, err
}
types, err := rows.ColumnTypes()
if err != nil {
	return nil, err
}
types[0].ScanType() // interface{}

Go doc says

// ScanType returns a Go type suitable for scanning into using [Rows.Scan].
// If a driver does not support this property ScanType will return
// the type of an empty interface.
func (ci *ColumnType) ScanType() reflect.Type

which would indicate that maybe this library doesn't support this functionality. Can it be supported?

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