sql - Inserting data in another table having different data structure in oracle -

i have table table1

item_code             desc       month      day01  day02  day03 fg0050bcyl0000cd     cyl head    feb-15       0       204   408 fg00186cyl0000cd     power unit  feb-15       425    123    202 

i want insert data in table table2 table1 in such way.

item_code                           month        date       quantity fg0050bcyl0000cd                    feb-15    01-feb-2015      0 fg0050bcyl0000cd                    feb-15    02-feb-2015      204 fg0050bcyl0000cd                    feb-15    03-feb-2015      408 fg00186cyl0000cd                    feb-15    01-feb-2015      425 fg00186cyl0000cd                    feb-15    02-feb-2015      123 fg00186cyl0000cd                    feb-15    03-feb-2015      202 

please tell me how achieve via pl sql

the following should close:

begin   arow in (select * table1)   loop     insert table2(item_code, month, "date", quantity)       values (arow.item_code, arow.month,               to_date(arow.month, 'mon-rr')+0, arow.day01);      insert table2(item_code, month, "date", quantity)       values (arow.item_code, arow.month,               to_date(arow.month, 'mon-rr')+1, arow.day02);      insert table2(item_code, month, "date", quantity)       values (arow.item_code, arow.month,               to_date(arow.month, 'mon-rr')+2, arow.day03);   end loop; end; 

note column names desc , date both reserved words in oracle, requires quoted shown above. simpler use different names, such description , activity_date, eliminate need quote these names every time they're used.

best of luck.