Rémy Voet (ryv)
dab23a2daf
Currently, the domain expression on a many2one field with
negative operator + string values leads to a extra SQL request on the
target model of the many2one which is not optimal and lead to
performance degradation.
Example:
--------
With a simple model A with a one2many (`b_id`) targeting model B (with
a field `b_name` and `_rec_name = b_name`):
The `A.search([('b_id', 'not like', 'OneName')])` will
generate two SQL requests:
- A _name_search on model B and returning ids who match
`('b_name', 'not like', 'OneName')`.
- A other on the model A with the application of the result
of the first one `('b_id', 'in', <returning ids> + [False])`.
Solution:
---------
Avoid the extra SQL request (the first one) and use subquery instead.
We do it by translate the `('b_id', 'in', <returning ids> + [False])`
expression into `['|', ('b_id', 'in', _subquery), ('b_id', '=', False)]`
task-2671476
Part-of: odoo/odoo#78948
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