diff --git a/BigQuery/OMOP CDM bigquery ddl.txt b/BigQuery/OMOP CDM bigquery ddl.txt
index 5a5263b..2bc4bb3 100644
--- a/BigQuery/OMOP CDM bigquery ddl.txt	
+++ b/BigQuery/OMOP CDM bigquery ddl.txt	
@@ -390,8 +390,8 @@ create table measurement
   person_id						          integer			not null ,
   measurement_concept_id		    integer			not null ,
   measurement_date				      date			  not null ,
+  measurement_datetime          datetime    null ,
   measurement_time              varchar(10) null ,
-  measurement_datetime			    datetime		null ,
   measurement_type_concept_id	  integer			not null ,
   operator_concept_id			      integer			null ,
   value_as_number				        float			  null ,
diff --git a/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/MEASUREMENT.md b/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/MEASUREMENT.md
index f683a82..c443a3d 100644
--- a/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/MEASUREMENT.md
+++ b/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/MEASUREMENT.md
@@ -7,6 +7,7 @@ Field|Required|Type|Description
 |measurement_concept_id|Yes|integer|A foreign key to the standard measurement concept identifier in the Standardized Vocabularies.|
 |measurement_date|Yes|date|The date of the Measurement.|
 |measurement_datetime|No|datetime|The date and time of the Measurement. Some database systems don't have a datatype of time. To accomodate all temporal analyses, datatype datetime can be used (combining measurement_date and measurement_time [forum discussion](http://forums.ohdsi.org/t/date-time-and-datetime-problem-and-the-world-of-hours-and-1day/314))|
+|measurement_time |No|varchar(10)|The time of the Measurement. This is present for backwards compatibility and will deprecated in an upcoming version|
 |measurement_type_concept_id|Yes|integer|A foreign key to the predefined Concept in the Standardized Vocabularies reflecting the provenance from where the Measurement record was recorded.|
 |operator_concept_id|No|integer|A foreign key identifier to the predefined Concept in the Standardized Vocabularies reflecting the mathematical operator that is applied to the value_as_number. Operators are <, <=, =, >=, >.|
 |value_as_number|No|float|A Measurement result where the result is expressed as a numeric value.|
diff --git a/Impala/OMOP CDM impala ddl.txt b/Impala/OMOP CDM impala ddl.txt
index 9fec86d..4b35d03 100644
--- a/Impala/OMOP CDM impala ddl.txt	
+++ b/Impala/OMOP CDM impala ddl.txt	
@@ -818,6 +818,8 @@ CREATE TABLE measurement
 
     measurement_datetime TIMESTAMP,
 
+    measurement_time VARCHAR(10),
+
     measurement_type_concept_id INTEGER,
 
     operator_concept_id INTEGER,
diff --git a/Netezza/OMOP CDM netezza ddl.txt b/Netezza/OMOP CDM netezza ddl.txt
index 02c5706..268eb26 100644
--- a/Netezza/OMOP CDM netezza ddl.txt	
+++ b/Netezza/OMOP CDM netezza ddl.txt	
@@ -479,7 +479,8 @@ CREATE TABLE measurement
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    DATETIME		NULL ,
+  measurement_datetime			    DATETIME	  NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
   value_as_number				        REAL			  NULL ,
diff --git a/Oracle/OMOP CDM oracle ddl.txt b/Oracle/OMOP CDM oracle ddl.txt
index 4b2a5ba..c8627f2 100644
--- a/Oracle/OMOP CDM oracle ddl.txt	
+++ b/Oracle/OMOP CDM oracle ddl.txt	
@@ -447,7 +447,8 @@ CREATE TABLE measurement
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    TIMESTAMP		NULL ,
+  measurement_datetime			    TIMESTAMP  	NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
   value_as_number				        FLOAT			  NULL ,
@@ -622,7 +623,7 @@ CREATE TABLE payer_plan_period
   sponsor_source_concept_id     INTEGER       NULL ,
   family_source_value			      VARCHAR(50)	  NULL ,
   stop_reason_concept_id        INTEGER       NULL ,
-  stop_reason_source_value      VARCHAR(50)   NULL ,
+  stop_reason_source_value      VARCHAR(50)      NULL ,
   stop_reason_source_concept_id INTEGER       NULL
 )
 ;
diff --git a/ParallelDataWarehouse/OMOP CDM pdw ddl.txt b/ParallelDataWarehouse/OMOP CDM pdw ddl.txt
index 847769e..4f21f38 100644
--- a/ParallelDataWarehouse/OMOP CDM pdw ddl.txt	
+++ b/ParallelDataWarehouse/OMOP CDM pdw ddl.txt	
@@ -207,7 +207,7 @@ Standardized clinical data
 
 ************************/
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  person
  (person_id						        INTEGER	  	NOT NULL ,
   gender_concept_id				    INTEGER	  	NOT NULL ,
@@ -231,7 +231,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  person
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  observation_period
  (observation_period_id				      INTEGER		NOT NULL ,
   person_id							            INTEGER		NOT NULL ,
@@ -242,7 +242,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  observation_period
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  specimen
  (specimen_id						      INTEGER			NOT NULL ,
   person_id							      INTEGER			NOT NULL ,
@@ -263,7 +263,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  specimen
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  death
  (person_id							  INTEGER			NOT NULL ,
   death_date							DATE			  NOT NULL ,
@@ -276,7 +276,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  death
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  visit_occurrence
  (visit_occurrence_id			      INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -299,7 +299,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  visit_occurrence
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  visit_detail
  (visit_detail_id             INTEGER     NOT NULL ,
   person_id                   INTEGER     NOT NULL ,
@@ -324,7 +324,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  visit_detail
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  procedure_occurrence
  (procedure_occurrence_id		  INTEGER			NOT NULL ,
   person_id						        INTEGER			NOT NULL ,
@@ -344,7 +344,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  procedure_occurrence
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  drug_exposure
  (drug_exposure_id				      INTEGER			  NOT NULL ,
   person_id						          INTEGER			  NOT NULL ,
@@ -373,7 +373,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  drug_exposure
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  device_exposure
  (device_exposure_id			        INTEGER		  	NOT NULL ,
   person_id						            INTEGER			  NOT NULL ,
@@ -394,7 +394,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  device_exposure
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  condition_occurrence
  (condition_occurrence_id		    INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -416,13 +416,14 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  condition_occurrence
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  measurement
  (measurement_id				        INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    DATETIME		NULL ,
+  measurement_datetime			    DATETIME  	NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
   value_as_number				        FLOAT			  NULL ,
@@ -441,7 +442,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  measurement
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  note
  (note_id						    INTEGER			  NOT NULL ,
   person_id						  INTEGER			  NOT NULL ,
@@ -481,7 +482,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  note_nlp
 WITH (DISTRIBUTION = REPLICATE);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  observation
  (observation_id					      INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -572,7 +573,7 @@ Standardized health economics
 ************************/
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  payer_plan_period
  (payer_plan_period_id			    INTEGER			  NOT NULL ,
   person_id						          INTEGER			  NOT NULL ,
@@ -629,7 +630,7 @@ Standardized derived elements
 ************************/
 
 
---HINT DISTRIBUTE_ON_KEY(subject_id)
+--HINT DISTRIBUTE_ON_KEY(subject_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  cohort
  (cohort_definition_id	INTEGER		NOT NULL ,
   subject_id						INTEGER		NOT NULL ,
@@ -639,7 +640,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  cohort
 WITH (DISTRIBUTION = HASH(subject_id));
 
 
---HINT DISTRIBUTE_ON_KEY(subject_id)
+--HINT DISTRIBUTE_ON_KEY(subject_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  cohort_attribute
  (cohort_definition_id		INTEGER		NOT NULL ,
   subject_id						  INTEGER		NOT NULL ,
@@ -652,7 +653,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  cohort_attribute
 WITH (DISTRIBUTION = HASH(subject_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  drug_era
  (drug_era_id					INTEGER			NOT NULL ,
   person_id						INTEGER			NOT NULL ,
@@ -665,7 +666,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  drug_era
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  dose_era
  (dose_era_id					  INTEGER			NOT NULL ,
   person_id						  INTEGER			NOT NULL ,
@@ -678,7 +679,7 @@ IF XACT_STATE() = 1 COMMIT; CREATE TABLE  dose_era
 WITH (DISTRIBUTION = HASH(person_id));
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 IF XACT_STATE() = 1 COMMIT; CREATE TABLE  condition_era
  (condition_era_id				    INTEGER			NOT NULL ,
   person_id						        INTEGER			NOT NULL ,
diff --git a/PostgreSQL/OMOP CDM postgresql ddl.txt b/PostgreSQL/OMOP CDM postgresql ddl.txt
index 42822f0..24abfea 100644
--- a/PostgreSQL/OMOP CDM postgresql ddl.txt	
+++ b/PostgreSQL/OMOP CDM postgresql ddl.txt	
@@ -447,14 +447,15 @@ CREATE TABLE measurement
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    TIMESTAMP		NULL ,
+  measurement_datetime			    TIMESTAMP  	NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
-  value_as_number				        NUMERIC			  NULL ,
+  value_as_number				        NUMERIC			NULL ,
   value_as_concept_id			      INTEGER			NULL ,
   unit_concept_id				        INTEGER			NULL ,
-  range_low					          	NUMERIC			  NULL ,
-  range_high					          NUMERIC			  NULL ,
+  range_low					          	NUMERIC			NULL ,
+  range_high					          NUMERIC			NULL ,
   provider_id					          INTEGER			NULL ,
   visit_occurrence_id			      INTEGER			NULL ,
   visit_detail_id               INTEGER     NULL ,
diff --git a/Redshift/OMOP CDM redshift ddl.txt b/Redshift/OMOP CDM redshift ddl.txt
index b81dec9..52a3bbc 100644
--- a/Redshift/OMOP CDM redshift ddl.txt	
+++ b/Redshift/OMOP CDM redshift ddl.txt	
@@ -207,7 +207,7 @@ Standardized clinical data
 
 ************************/
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE person
  (person_id						        INTEGER	  	NOT NULL ,
   gender_concept_id				    INTEGER	  	NOT NULL ,
@@ -231,7 +231,7 @@ CREATE TABLE person
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE observation_period
  (observation_period_id				      INTEGER		NOT NULL ,
   person_id							            INTEGER		NOT NULL ,
@@ -242,7 +242,7 @@ CREATE TABLE observation_period
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE specimen
  (specimen_id						      INTEGER			NOT NULL ,
   person_id							      INTEGER			NOT NULL ,
@@ -263,7 +263,7 @@ CREATE TABLE specimen
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE death
  (person_id							  INTEGER			NOT NULL ,
   death_date							DATE			  NOT NULL ,
@@ -276,7 +276,7 @@ CREATE TABLE death
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE visit_occurrence
  (visit_occurrence_id			      INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -299,7 +299,7 @@ CREATE TABLE visit_occurrence
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE visit_detail
  (visit_detail_id             INTEGER     NOT NULL ,
   person_id                   INTEGER     NOT NULL ,
@@ -324,7 +324,7 @@ CREATE TABLE visit_detail
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE procedure_occurrence
  (procedure_occurrence_id		  INTEGER			NOT NULL ,
   person_id						        INTEGER			NOT NULL ,
@@ -344,7 +344,7 @@ CREATE TABLE procedure_occurrence
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE drug_exposure
  (drug_exposure_id				      INTEGER			  NOT NULL ,
   person_id						          INTEGER			  NOT NULL ,
@@ -373,7 +373,7 @@ CREATE TABLE drug_exposure
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE device_exposure
  (device_exposure_id			        INTEGER		  	NOT NULL ,
   person_id						            INTEGER			  NOT NULL ,
@@ -394,7 +394,7 @@ CREATE TABLE device_exposure
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE condition_occurrence
  (condition_occurrence_id		    INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -416,13 +416,14 @@ CREATE TABLE condition_occurrence
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE measurement
  (measurement_id				        INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    TIMESTAMP		NULL ,
+  measurement_datetime			    TIMESTAMP  	NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
   value_as_number				        FLOAT			  NULL ,
@@ -441,7 +442,7 @@ CREATE TABLE measurement
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE note
  (note_id						    INTEGER			  NOT NULL ,
   person_id						  INTEGER			  NOT NULL ,
@@ -481,7 +482,7 @@ CREATE TABLE note_nlp
 DISTSTYLE ALL;
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE observation
  (observation_id					      INTEGER			NOT NULL ,
   person_id						          INTEGER			NOT NULL ,
@@ -572,7 +573,7 @@ Standardized health economics
 ************************/
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE payer_plan_period
  (payer_plan_period_id			    INTEGER			  NOT NULL ,
   person_id						          INTEGER			  NOT NULL ,
@@ -629,7 +630,7 @@ Standardized derived elements
 ************************/
 
 
---HINT DISTRIBUTE_ON_KEY(subject_id)
+--HINT DISTRIBUTE_ON_KEY(subject_id) 
 CREATE TABLE cohort
  (cohort_definition_id	INTEGER		NOT NULL ,
   subject_id						INTEGER		NOT NULL ,
@@ -639,7 +640,7 @@ CREATE TABLE cohort
 DISTKEY(subject_id);
 
 
---HINT DISTRIBUTE_ON_KEY(subject_id)
+--HINT DISTRIBUTE_ON_KEY(subject_id) 
 CREATE TABLE cohort_attribute
  (cohort_definition_id		INTEGER		NOT NULL ,
   subject_id						  INTEGER		NOT NULL ,
@@ -652,7 +653,7 @@ CREATE TABLE cohort_attribute
 DISTKEY(subject_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE drug_era
  (drug_era_id					INTEGER			NOT NULL ,
   person_id						INTEGER			NOT NULL ,
@@ -665,7 +666,7 @@ CREATE TABLE drug_era
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE dose_era
  (dose_era_id					  INTEGER			NOT NULL ,
   person_id						  INTEGER			NOT NULL ,
@@ -678,7 +679,7 @@ CREATE TABLE dose_era
 DISTKEY(person_id);
 
 
---HINT DISTRIBUTE_ON_KEY(person_id)
+--HINT DISTRIBUTE_ON_KEY(person_id) 
 CREATE TABLE condition_era
  (condition_era_id				    INTEGER			NOT NULL ,
   person_id						        INTEGER			NOT NULL ,
diff --git a/Sql Server/OMOP CDM sql server ddl.txt b/Sql Server/OMOP CDM sql server ddl.txt
index 6b11877..ea84452 100644
--- a/Sql Server/OMOP CDM sql server ddl.txt	
+++ b/Sql Server/OMOP CDM sql server ddl.txt	
@@ -447,7 +447,8 @@ CREATE TABLE measurement
   person_id						          INTEGER			NOT NULL ,
   measurement_concept_id		    INTEGER			NOT NULL ,
   measurement_date				      DATE			  NOT NULL ,
-  measurement_datetime			    DATETIME		NULL ,
+  measurement_datetime			    DATETIME  	NULL ,
+  measurement_time              VARCHAR(10) NULL ,
   measurement_type_concept_id	  INTEGER			NOT NULL ,
   operator_concept_id			      INTEGER			NULL ,
   value_as_number				        FLOAT			  NULL ,