-- 230 Number of visit_occurrence records inside a valid observation period

SELECT 
	230 AS analysis_id,
	CAST(NULL AS VARCHAR(255)) AS stratum_1,
	CAST(NULL AS VARCHAR(255)) AS stratum_2,
	CAST(NULL AS VARCHAR(255)) AS stratum_3,
	CAST(NULL AS VARCHAR(255)) AS stratum_4,
	CAST(NULL AS VARCHAR(255)) AS stratum_5,
	COUNT_BIG(*) AS count_value
INTO 
	@scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_230
FROM 
	@cdmDatabaseSchema.visit_occurrence vo
LEFT JOIN 
	@cdmDatabaseSchema.observation_period op 
ON 
	vo.person_id = op.person_id
AND 
	vo.visit_start_date >= op.observation_period_start_date
AND 
	vo.visit_start_date <= op.observation_period_end_date
;
