openerp-india team mailing list archive

["Olivier Dony \(OpenERP\)" <922621@xxxxxxxxxxxxxxxxxx>]

For the record, here is a comparison of explain plans simulating the sub-select used in the patch and a full JOIN against account_account. The actual times are those of a sample database with 1071 account_move_lines in account 838, so they do not differ much, but still significantly.
It seems the sub-select is a bit cheaper than the full-blown join, both in the estimated and actual costs:


# -- SUB-SELECT VERSION
# explain analyze select (SELECT CASE WHEN currency_id IS NULL THEN 0 ELSE COALESCE(SUM(l.amount_currency), 0) END FROM account_account WHERE id IN (l.account_id)) as foreign_balance from account_move_line l where l.account_id = 838 group by l.account_id;
                                                                      QUERY PLAN
------------------------------------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=9.45..525.70 rows=2 width=20) (actual time=3.715..3.715 rows=1 loops=1)
   ->  Bitmap Heap Scan on account_move_line l  (cost=9.45..507.98 rows=154 width=20) (actual time=0.357..2.824 rows=1071 loops=1)
         Recheck Cond: (account_id = 838)
         ->  Bitmap Index Scan on account_move_line_account_id_index  (cost=0.00..9.41 rows=154 width=0) (actual time=0.248..0.248 rows=1205 loops=1)
               Index Cond: (account_id = 838)
   SubPlan 1
     ->  Index Scan using account_account_pkey on account_account  (cost=0.00..8.27 rows=1 width=4) (actual time=0.023..0.024 rows=1 loops=1)
           Index Cond: (id = $2)
 Total runtime: 3.781 ms
(9 rows)


# -- JOIN VERSION
# explain analyze select CASE WHEN a.currency_id is null then 0 else COALESCE(SUM(l.amount_currency), 0) end as foreign_balance from account_move_line l join account_account a on (l.account_id = a.id) where l.account_id = 838 group by a.id, a.currency_id;
                                                                         QUERY PLAN
------------------------------------------------------------------------------------------------------------------------------------------------------------
 HashAggregate  (cost=519.33..519.34 rows=1 width=24) (actual time=3.958..3.958 rows=1 loops=1)
   ->  Nested Loop  (cost=9.45..517.79 rows=154 width=24) (actual time=0.373..3.201 rows=1071 loops=1)
         ->  Index Scan using account_account_pkey on account_account a  (cost=0.00..8.27 rows=1 width=8) (actual time=0.026..0.028 rows=1 loops=1)
               Index Cond: (id = 838)
         ->  Bitmap Heap Scan on account_move_line l  (cost=9.45..507.98 rows=154 width=20) (actual time=0.341..2.716 rows=1071 loops=1)
               Recheck Cond: (l.account_id = 838)
               ->  Bitmap Index Scan on account_move_line_account_id_index  (cost=0.00..9.41 rows=154 width=0) (actual time=0.233..0.233 rows=1205 loops=1)
                     Index Cond: (l.account_id = 838)
 Total runtime: 4.029 ms
(9 rows)

-- 
You received this bug notification because you are a member of OpenERP
Indian Team, which is subscribed to OpenERP Addons.
https://bugs.launchpad.net/bugs/922621

Title:
  [trunk] foreign_balance should not be computed for account with no
  secondary currency

Status in OpenERP Addons (modules):
  Fix Released

Bug description:
  Hello.

  We are working on this Optimization:

  https://code.launchpad.net/~vauxoo/openobject-addons/trunk-bug_887376
  -account_compute_with_btree-VAUXOO/+merge/89741

  And we face a BIG problem with multicurrency feature just improved
  some little time ago.

  In this line of account.py

  'foreign_balance': "COALESCE(SUM(l.amount_currency), 0) as
  foreign_balance",

  We see that this algorithm sum all multicurrency values and it is
  TOTALLY wrong, because i can have n the same account different vaules,
  and we NEVER can sum Apples with Pears.

  How functionally you can try:

  Make an move invoice on €.
  Then Make an invoice to same partner in USD$
  Make an invoice an you currency, (We Use VEF).

  Then go to edit tree view for accounts and show the field
  "foreign_balance" with the view editor,

  You can face that if pfor example you made 3 invoice for 100 CURRENCY,
  the total for the account REceivable or Payable related on this
  invoices.

  The amount received is 300 (sum directly for 100€ 100$ and 100VEF)

  -In V6 this feature is simply missing.-

  I think it is a huge cancept mistake.

  IMHO, we need to have from OpenERP-dev team a Blueprint related with
  the concept that they want to implement in this field, because in
  other way this field is really useless and affect the performance in
  calculation.

To manage notifications about this bug go to:
https://bugs.launchpad.net/openobject-addons/+bug/922621/+subscriptions