I Have two table table1 and table2. table1 some Items and rate table2 some transactions. I want update Table2 rate in Table1   but Table2 Many transactions in same Item I want Update Rate Last id 
for example
        Table 1
       ItemCode     Name      Rate
      ----------------------------
       101         book         30
       102         pen          10
        Table 2
       Id   ItemCode    Name    Rate
       ------------------------------
        1     101       book     40 
        2     101       book     35    
        3     101       book     20  
      so i want output :
      ItemCode     Name      Rate
      ----------------------------
      101         book         20
      102         pen          10
