Victor Piryns (pivi)
980d3486f5
Since 81fe11fabb, the field
`expense_sheet_id` was converted from a One2many to a Many2one,
making it a stored field.
Since then opening the form view of an expense report can be quite
slow (around +-1.6s) in a database with a lot of `account.move`, as
the whole table needs to be scanned to match the `id` of the
`expense_sheet_id`.
We add a partial not null index on the field (since not a lot of
`account.move` are linked to an expense) and it speeds up the read
to 60ms.
Reference:
task-3572440
closes odoo/odoo#142260
X-original-commit: edefee03110c63b152148b7599aed250dc9978df
Signed-off-by: William André (wan) <wan@odoo.com>
Signed-off-by: Piryns Victor (pivi) <pivi@odoo.com>
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