/Go/How to count the rows returned by a query context go

How to count the rows returned by a query context go

var count int

err := db.QueryRow("SELECT COUNT(*) FROM main_table").Scan(&count)
switch {    
case err != nil:
    log.Fatal(err)
default:
    fmt.Printf("Number of rows are %s\n", count)
}

Source: stackoverflow.com

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