Remove redundant join from allvisittable query (#182)

OHDSI · Feb 14, 2024 · 371bec2 · 371bec2
1 parent 9392b87
commit 371bec2
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Showing 2 changed files with 2 additions and 10 deletions.
diff --git a/inst/sql/sql_server/cdm_version/v531/AllVisitTable.sql b/inst/sql/sql_server/cdm_version/v531/AllVisitTable.sql
@@ -77,12 +77,8 @@ FROM (
 			CL1.patient,
 			CL1.encounterclass,
 			CL1.start VISIT_START_DATE,
-			CL2.stop VISIT_END_DATE
+			CL1.stop VISIT_END_DATE
 		FROM @synthea_schema.encounters CL1
-		JOIN @synthea_schema.encounters CL2
-			ON CL1.patient = CL2.patient
-			AND CL1.start = CL2.start
-			AND CL1.encounterclass = CL2.encounterclass
 		WHERE CL1.encounterclass in ('emergency','urgent')
 	) T1
 	GROUP BY patient, encounterclass, VISIT_START_DATE

diff --git a/inst/sql/sql_server/cdm_version/v540/AllVisitTable.sql b/inst/sql/sql_server/cdm_version/v540/AllVisitTable.sql
@@ -77,12 +77,8 @@ FROM (
 			CL1.patient,
 			CL1.encounterclass,
 			CL1.start VISIT_START_DATE,
-			CL2.stop VISIT_END_DATE
+			CL1.stop VISIT_END_DATE
 		FROM @synthea_schema.encounters CL1
-		JOIN @synthea_schema.encounters CL2
-			ON CL1.patient = CL2.patient
-			AND CL1.start = CL2.start
-			AND CL1.encounterclass = CL2.encounterclass
 		WHERE CL1.encounterclass in ('emergency','urgent')
 	) T1
 	GROUP BY patient, encounterclass, VISIT_START_DATE