From 7fa78e68b0c9621077757210b58e1a23aeb6e021 Mon Sep 17 00:00:00 2001
From: Yannick Tivisse <yti@odoo.com>
Date: Wed, 7 Jun 2023 10:35:23 +0000
Subject: [PATCH] [IMP] hr_work_entry_contract: Add index for performance
 improvement

From 7s to 2ms for this query with 2.6M records

explain (analyze, verbose, buffers)
SELECT "hr_work_entry"."id" FROM "hr_work_entry" WHERE
(
    ("hr_work_entry"."active" = true) AND
    (
    (
      ("hr_work_entry"."state" in ('validated', 'draft')) AND
      ("hr_work_entry"."contract_id" in (548259))
    )
    AND
    (
     (
      (
       (("hr_work_entry"."date_start" >= '2023-05-01 00:00:00') AND (
        "hr_work_entry"."date_start" < '2023-05-31 23:59:59.999999')
       ) AND
       ("hr_work_entry"."date_stop" > '2023-05-31 23:59:59.999999')
      )
         OR
       ((("hr_work_entry"."date_start" < '2023-05-01 00:00:00') AND
        ("hr_work_entry"."date_stop" <= '2023-05-31 23:59:59.999999')) AND
        ("hr_work_entry"."date_stop" > '2023-05-01 00:00:00'))
    ) OR
      (("hr_work_entry"."date_start" < '2023-05-01 00:00:00') AND
       ("hr_work_entry"."date_stop" > '2023-05-01 23:59:59.999999'))
    )
  )
)
ORDER BY COALESCE("hr_work_entry"."conflict", false) DESC,
         "hr_work_entry"."state" ,"hr_work_entry"."date_start"
;

closes odoo/odoo#124108

Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>
---
 addons/hr_work_entry_contract/models/hr_work_entry.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/addons/hr_work_entry_contract/models/hr_work_entry.py b/addons/hr_work_entry_contract/models/hr_work_entry.py
index d5208a5c256..d8b06de88b9 100644
--- a/addons/hr_work_entry_contract/models/hr_work_entry.py
+++ b/addons/hr_work_entry_contract/models/hr_work_entry.py
@@ -18,6 +18,14 @@ class HrWorkEntry(models.Model):
     employee_id = fields.Many2one(domain=[('contract_ids.state', 'in', ('open', 'pending'))])
     work_entry_source = fields.Selection(related='contract_id.work_entry_source')
 
+    def init(self):
+        # FROM 7s by query to 2ms (with 2.6 millions entries)
+        self.env.cr.execute("""
+            CREATE INDEX IF NOT EXISTS hr_work_entry_contract_date_start_stop_idx
+            ON hr_work_entry(contract_id, date_start, date_stop)
+            WHERE state in ('draft', 'validated');
+        """)
+
     def _init_column(self, column_name):
         if column_name != 'contract_id':
             super()._init_column(column_name)