Question : msaccess 2003 table update required

Where the account number in F1 is a sub account number (a sub account number is defined as an account number with either a ".1" or ".2" suffix such as: AccountNumber.1 or AccountNumber.2) the values in F5, F6, F7 of the sub account record should be updated with the values in the same relative field of the Main Account number.

Only ".1" or ".2" are considered valid sub account numbers. If there exists a .3 or .4 no action should be taken. No changes should be made to non-sub account records or to any other fields (ie F2, F3 etc)

Before:
  F1         F5         F6         F7
3000     1M15     3D24   5D12
3000.1     0           0         0
3000.2     0           0         0
3112        1           3         2
4111       2D         3E       4F
5100        0           0         0
5100.1  1M15     3D24   5D12
5100.2  1M15     3D24   5D12


After:
  F1         F5         F6         F7
3000     1M15     3D24   5D12(no chg to this record)
3000.1  1M15     3D24   5D12
3000.2  1M15     3D24   5D12
3112        1           3         2 (no chg to this record)
4111       2D         3E       4F (no chg to this record)
5100        0           0         0(no chg to this record)
5100.1     0           0         0
5100.2     0           0         0

Answer : msaccess 2003 table update required

ok, use this query

UPDATE dsgl1 AS A, dsgl1 AS B SET a.MtdDocCount02 = b.MtdDocCount02
WHERE clng(Left(A.GL_Account,4))=B.GL_Account;