From 94040e68fb112259e9a350feb9510f822d98e971 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=85=B3=E7=BE=BD?= <关羽@gentronhealth.com>
Date: Thu, 14 May 2026 13:10:10 +0800
Subject: [PATCH] =?UTF-8?q?Fix=20Bug=20#489:=20=E3=80=90=E5=8C=BB=E5=98=B1?=
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Root cause: The SQL query in AdviceProcessAppMapper.xml used a plain LEFT JOIN with
med_medication_dispense on med_req_id. When a single medication request had multiple
dispense records (e.g., from repeated executions or summary operations), the JOIN
produced multiple rows per request — up to 222 rows for one request. SELECT DISTINCT
could not deduplicate because dispense_status values differed across rows.

Fix: Replace the plain LEFT JOIN with LEFT JOIN LATERAL (subquery ORDER BY create_time
DESC LIMIT 1) to fetch only the most recent dispense record per medication request.
This ensures exactly one row per request regardless of how many dispense records exist.

Verified: SQL query now returns 0 duplicate rows across all medication requests.
---
 .../inhospitalnursestation/AdviceProcessAppMapper.xml  | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/openhis-server-new/openhis-application/src/main/resources/mapper/inhospitalnursestation/AdviceProcessAppMapper.xml b/openhis-server-new/openhis-application/src/main/resources/mapper/inhospitalnursestation/AdviceProcessAppMapper.xml
index dbd2b1cd9..ef073303a 100755
--- a/openhis-server-new/openhis-application/src/main/resources/mapper/inhospitalnursestation/AdviceProcessAppMapper.xml
+++ b/openhis-server-new/openhis-application/src/main/resources/mapper/inhospitalnursestation/AdviceProcessAppMapper.xml
@@ -280,9 +280,13 @@
                                          aa.balance_amount
                            ) AS personal_account
                               ON personal_account.encounter_id = ae.id
-                     LEFT JOIN med_medication_dispense mmd
-                               ON mmd.med_req_id = T1.id
-                                   AND mmd.delete_flag = '0'
+                     LEFT JOIN LATERAL (
+                         SELECT status_enum
+                         FROM med_medication_dispense
+                         WHERE med_req_id = T1.id AND delete_flag = '0'
+                         ORDER BY create_time DESC
+                         LIMIT 1
+                     ) mmd ON true
                 WHERE T1.delete_flag = '0'
                 AND T1.refund_medicine_id IS NULL
                 AND T1.generate_source_enum = #{doctorPrescription}