Fix for #309: Oracle error on selecting null values (#314)

* Fix for #309, Oracle error when using zero-length columns

* Added schema CSV for achilles heel. Converted all remaining null values to "cast(null as" with appropriate data type to help fix #309.

inst/csv/schemas/schema_achilles_heel.csv

@@ -0,0 +1,5 @@
+FIELD_NAME,FIELD_TYPE
+analysis_id,int
+achilles_heel_warning,varchar(255)
+rule_id,int
+record_count,bigint

inst/sql/sql_server/analyses/0.sql

@@ -3,23 +3,23 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 0 as analysis_id,  CAST('@source_name' AS VARCHAR(255)) as stratum_1, CAST('@achilles_version' AS VARCHAR(255)) as stratum_2, 
 CAST(GETDATE() AS VARCHAR(255)) as stratum_3,
-null as stratum_4, null as stratum_5,
+cast(null as varchar(255)) as stratum_4, cast(null as varchar(255)) as stratum_5,
 COUNT_BIG(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_0
 from @cdmDatabaseSchema.PERSON;
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 0 as analysis_id, CAST('@source_name' AS VARCHAR(255)) as stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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(distinct person_id) as count_value, 
-  null as min_value,
-	null as max_value,
-	null as avg_value,
-	null as stdev_value,
-	null as median_value,
-	null as p10_value,
-	null as p25_value,
-	null as p75_value,
-	null as p90_value
+  cast(null as float) as min_value,
+	cast(null as float) as max_value,
+	cast(null as float) as avg_value,
+	cast(null as float) as stdev_value,
+	cast(null as float) as median_value,
+	cast(null as float) as p10_value,
+	cast(null as float) as p25_value,
+	cast(null as float) as p75_value,
+	cast(null as float) as p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_0
 from @cdmDatabaseSchema.PERSON;

inst/sql/sql_server/analyses/1.sql

@@ -1,7 +1,7 @@
 -- 1	Number of persons
 
 select 1 as analysis_id,  
-null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1
 from @cdmDatabaseSchema.PERSON;

inst/sql/sql_server/analyses/10.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 10 as analysis_id,  CAST(year_of_birth AS VARCHAR(255)) as stratum_1,
   CAST(gender_concept_id AS VARCHAR(255)) as stratum_2,
-  null as stratum_3, null as stratum_4, null as stratum_5,
+  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(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_10
 from @cdmDatabaseSchema.PERSON

inst/sql/sql_server/analyses/1000.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1000 as analysis_id, 
 	CAST(ce1.condition_CONCEPT_ID AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct ce1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1000
 from

inst/sql/sql_server/analyses/1001.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1001 as analysis_id, 
 	CAST(ce1.condition_CONCEPT_ID AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(ce1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1001
 from

inst/sql/sql_server/analyses/1002.sql

@@ -4,7 +4,7 @@
 select 1002 as analysis_id,   
 	CAST(ce1.condition_concept_id AS VARCHAR(255)) as stratum_1,
 	CAST(YEAR(condition_era_start_date)*100 + month(condition_era_start_date) AS VARCHAR(255)) as stratum_2,
-	null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1002
 from

inst/sql/sql_server/analyses/1003.sql

@@ -50,7 +50,7 @@ GROUP BY o.total, o.min_value, o.max_value, o.avg_value, o.stdev_value
 
 --HINT DISTRIBUTE_ON_KEY(count_value)
 select analysis_id, 
-null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_1003
 from #tempResults

inst/sql/sql_server/analyses/1004.sql

@@ -6,7 +6,7 @@ select 1004 as analysis_id,
 	CAST(YEAR(condition_era_start_date) AS VARCHAR(255)) as stratum_2,
 	CAST(p1.gender_concept_id AS VARCHAR(255)) as stratum_3,
 	CAST(floor((year(condition_era_start_date) - p1.year_of_birth)/10) AS VARCHAR(255)) as stratum_4,
-	null as stratum_5,
+	cast(null as varchar(255)) as stratum_5,
 	COUNT_BIG(distinct p1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1004
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/1006.sql

@@ -61,7 +61,7 @@ GROUP BY o.stratum1_id, o.stratum2_id, o.total, o.min_value, o.max_value, o.avg_
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select analysis_id, stratum1_id as stratum_1, stratum2_id as stratum_2, 
-null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_1006
 from #tempResults

inst/sql/sql_server/analyses/1007.sql

@@ -54,7 +54,7 @@ GROUP BY p.stratum1_id, o.total, o.min_value, o.max_value, o.avg_value, o.stdev_
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select analysis_id, stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_1007
 from #tempResults

inst/sql/sql_server/analyses/1008.sql

@@ -2,7 +2,7 @@
 
 
 select 1008 as analysis_id,  
-	null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(ce1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1008
 from

inst/sql/sql_server/analyses/1009.sql

@@ -2,7 +2,7 @@
 
 
 select 1009 as analysis_id,  
-	null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(ce1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1009
 from

inst/sql/sql_server/analyses/101.sql

@@ -2,7 +2,7 @@
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 101 as analysis_id,   CAST(year(op1.index_date) - p1.YEAR_OF_BIRTH AS VARCHAR(255)) as stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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(p1.person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_101
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/1010.sql

@@ -2,7 +2,7 @@
 
 
 select 1010 as analysis_id,  
-	null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(ce1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1010
 from

inst/sql/sql_server/analyses/102.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 102 as analysis_id,  CAST(p1.gender_concept_id AS VARCHAR(255)) as stratum_1, 
 CAST(year(op1.index_date) - p1.YEAR_OF_BIRTH AS VARCHAR(255)) as stratum_2, 
-null as stratum_3, null as stratum_4, null as stratum_5,
+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(p1.person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_102
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/1020.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1020 as analysis_id,   
 	CAST(YEAR(condition_era_start_date)*100 + month(condition_era_start_date) AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1020
 from

inst/sql/sql_server/analyses/103.sql

@@ -50,7 +50,7 @@ tempResults as
   GROUP BY o.total, o.min_value, o.max_value, o.avg_value, o.stdev_value
 )
 select analysis_id, 
-null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5, 
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_103
 from tempResults

inst/sql/sql_server/analyses/104.sql

@@ -52,7 +52,7 @@ GROUP BY o.gender_concept_id, o.total, o.min_value, o.max_value, o.avg_value, o.
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1) 
 select analysis_id, stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_104
 from #tempResults

inst/sql/sql_server/analyses/105.sql

@@ -52,7 +52,7 @@ GROUP BY o.total, o.min_value, o.max_value, o.avg_value, o.stdev_value
 
 --HINT DISTRIBUTE_ON_KEY(count_value)
 select analysis_id,
-null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5, count_value,
+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_value,
 min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_105
 from #tempResults

inst/sql/sql_server/analyses/106.sql

@@ -58,7 +58,7 @@ GROUP BY o.gender_concept_id, o.total, o.min_value, o.max_value, o.avg_value, o.
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select analysis_id, gender_concept_id as stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_106
 FROM #tempResults

inst/sql/sql_server/analyses/107.sql

@@ -63,7 +63,7 @@ GROUP BY o.age_decile, o.total, o.min_value, o.max_value, o.avg_value, o.stdev_v
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select analysis_id, age_decile as stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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_value, min_value, max_value, avg_value, stdev_value, median_value, p10_value, p25_value, p75_value, p90_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_dist_107
 FROM #tempResults

inst/sql/sql_server/analyses/108.sql

@@ -2,7 +2,7 @@
 
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 108 as analysis_id,  CAST(floor(DATEDIFF(dd, op1.observation_period_start_date, op1.observation_period_end_date)/30) AS VARCHAR(255)) as stratum_1, 
-null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+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(distinct p1.person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_108
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/109.sql

@@ -15,7 +15,7 @@ FROM @cdmDatabaseSchema.observation_period
 SELECT 
   109 AS analysis_id,  
 	CAST(obs_year AS VARCHAR(255)) AS stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(DISTINCT person_id) AS count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_109
 FROM @cdmDatabaseSchema.observation_period,

inst/sql/sql_server/analyses/11.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 11 as analysis_id,  CAST(year_of_birth AS VARCHAR(255)) as stratum_1,
   CAST(gender_concept_id AS VARCHAR(255)) as stratum_2,
-  null as stratum_3, null as stratum_4, null as stratum_5,
+  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(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_11
 from @cdmDatabaseSchema.PERSON

inst/sql/sql_server/analyses/110.sql

@@ -5,7 +5,7 @@
 SELECT
   110 as analysis_id,  
 	CAST(t1.obs_month AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct op1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_110
 FROM

inst/sql/sql_server/analyses/1100.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1100 as analysis_id,  
 	CAST(left(l1.zip,3) AS VARCHAR(255)) as stratum_1, 
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1100
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/1101.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1101 as analysis_id,  
 	CAST(l1.state AS VARCHAR(255)) as stratum_1, 
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct person_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1101
 from @cdmDatabaseSchema.PERSON p1

inst/sql/sql_server/analyses/1102.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1102 as analysis_id,  
 	CAST(left(l1.zip,3) AS VARCHAR(255)) as stratum_1, 
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct care_site_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1102
 from @cdmDatabaseSchema.care_site cs1

inst/sql/sql_server/analyses/1103.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 1103 as analysis_id,  
 	CAST(l1.state AS VARCHAR(255)) as stratum_1, 
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct care_site_id) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_1103
 from @cdmDatabaseSchema.care_site cs1

inst/sql/sql_server/analyses/111.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 111 as analysis_id, 
 	CAST(YEAR(observation_period_start_date)*100 + month(OBSERVATION_PERIOD_START_DATE) AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct op1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_111
 from

inst/sql/sql_server/analyses/112.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 112 as analysis_id,  
 	CAST(YEAR(observation_period_end_date)*100 + month(observation_period_end_date) AS VARCHAR(255)) as stratum_1,
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct op1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_112
 from

inst/sql/sql_server/analyses/113.sql

@@ -3,7 +3,7 @@
 --HINT DISTRIBUTE_ON_KEY(stratum_1)
 select 113 as analysis_id,  
 	CAST(op1.num_periods AS VARCHAR(255)) as stratum_1, 
-	null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct op1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_113
 from

inst/sql/sql_server/analyses/114.sql

@@ -1,7 +1,7 @@
 -- 114	Number of persons with observation period before year-of-birth
 
 select 114 as analysis_id,  
-	null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(distinct p1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_114
 from

inst/sql/sql_server/analyses/115.sql

@@ -1,7 +1,7 @@
 -- 115	Number of persons with observation period end < start
 
 select 115 as analysis_id,  
-	null as stratum_1, null as stratum_2, null as stratum_3, null as stratum_4, null as stratum_5,
+	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(op1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_115
 from

inst/sql/sql_server/analyses/116.sql

@@ -16,7 +16,7 @@ select 116 as analysis_id,
 	CAST(t1.obs_year AS VARCHAR(255)) as stratum_1,
 	CAST(p1.gender_concept_id AS VARCHAR(255)) as stratum_2,
 	CAST(floor((t1.obs_year - p1.year_of_birth)/10) AS VARCHAR(255)) as stratum_3,
-	null as stratum_4, null as stratum_5,
+	cast(null as varchar(255)) as stratum_4, cast(null as varchar(255)) as stratum_5,
 	COUNT_BIG(distinct p1.PERSON_ID) as count_value
 into @scratchDatabaseSchema@schemaDelim@tempAchillesPrefix_116
 from