„ᴡɪʀ ᴋöɴɴᴇɴ ɴᴜʀ ᴡɪssᴇɴ , ᴅᴀss ᴡɪʀ ɴɪᴄʜᴛs ᴡɪssᴇɴ.
if the data has not been changed, no new rows will appear.