教程DB本页总览DBClonenew clone db with every chain callfmt.Printf("%p", db) // #1fmt.Printf("%p", db.Debug()) // #2fmt.Printf("%p", db.Must()) // #3影响行约束will check the RowsAffected > 0 or Scan rows > 0db.Affect()调试模式db.Debug()Trace IDdb.WithTraceId("test")