maximum value from table field.

hi all,

I wrote below code to select the maximum value of field cust_id from table ZPND_CUST_TAB,

but its not working as i required its giving last entry of the table.

can any one tell me what should i change in below code to get maximum value from cust_id field of  ZPND_CUST_TAB table.

DATA temp_cust_id TYPE ZPND_CUST_TAB-CUST_ID.

SELECT MAX( CUST_ID )  FROM  ZPND_CUST_TAB

                        INTO temp_cust_id

                        WHERE CUST_ID > 0.

   WRITE  temp_cust_id.