Alvaro Fuentes e50f762aa9 [FIX] point_of_sale: fix memory error
When there are too many (millions) of POS order lines associated to
opened POS sessions we get too many taxes, most are duplicated. This
causes a MemorryError.

Example queries from a real DB:
```
> select count(distinct r.account_tax_id) from pos_order_line l join pos_order o on o.id = l.order_id join pos_session s on s.id = o.session_id join account_tax_pos_order_line_rel r on r.pos_order_
 line_id = l.id where s.state != 'closed'
+-------+
| count |
|-------|
| 24    |
+-------+
> select count(r.account_tax_id) from pos_order_line l join pos_order o on o.id = l.order_id join pos_session s on s.id = o.session_id join account_tax_pos_order_line_rel r on r.pos_order_line_id =
  l.id where s.state != 'closed'
+---------+
| count   |
|---------|
| 2504539 |
+---------+
```

opw-3295467

closes odoo/odoo#124990

X-original-commit: b5870af0fd74118d96cbd130f3b319e2319d82f8
Signed-off-by: Christophe Simonis (chs) <chs@odoo.com>
2023-06-15 01:20:15 +02:00
2023-06-10 16:50:55 +02:00
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Odoo

Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, ...

Odoo Apps can be used as stand-alone applications, but they also integrate seamlessly so you get a full-featured Open Source ERP when you install several Apps.

Getting started with Odoo

For a standard installation please follow the Setup instructions from the documentation.

To learn the software, we recommend the Odoo eLearning, or Scale-up, the business game. Developers can start with the developer tutorials

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