From 61bae0aa038302d89b66a5b4c7c0b9e23c671f57 Mon Sep 17 00:00:00 2001
From: Mark Velez <mav7014@nyp.org>
Date: Fri, 30 Jun 2017 20:48:08 -0400
Subject: [PATCH] Set datetime fields to nullable rather than required

 * As defined by OMOP spec (see https://github.com/OHDSI/CommonDataModel)
 * Datetimes in observation_period will likely be removed (see https://github.com/OHDSI/CommonDataModel/pull/64)
---
 tools/bq/schemas/condition_occurrence.json | 2 +-
 tools/bq/schemas/device_exposure.json      | 2 +-
 tools/bq/schemas/drug_exposure.json        | 2 +-
 tools/bq/schemas/observation_period.json   | 4 ++--
 tools/bq/schemas/procedure_occurrence.json | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/bq/schemas/condition_occurrence.json b/tools/bq/schemas/condition_occurrence.json
index e31cdc3599..f4b50d05bb 100644
--- a/tools/bq/schemas/condition_occurrence.json
+++ b/tools/bq/schemas/condition_occurrence.json
@@ -22,7 +22,7 @@
     {
         "type": "timestamp", 
         "name": "condition_start_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "date", 
diff --git a/tools/bq/schemas/device_exposure.json b/tools/bq/schemas/device_exposure.json
index 45b6408fd8..e0d91f59dd 100644
--- a/tools/bq/schemas/device_exposure.json
+++ b/tools/bq/schemas/device_exposure.json
@@ -22,7 +22,7 @@
     {
         "type": "timestamp", 
         "name": "device_exposure_start_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "date", 
diff --git a/tools/bq/schemas/drug_exposure.json b/tools/bq/schemas/drug_exposure.json
index 3e054fe699..5d6ca3ab09 100644
--- a/tools/bq/schemas/drug_exposure.json
+++ b/tools/bq/schemas/drug_exposure.json
@@ -22,7 +22,7 @@
     {
         "type": "timestamp", 
         "name": "drug_exposure_start_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "date", 
diff --git a/tools/bq/schemas/observation_period.json b/tools/bq/schemas/observation_period.json
index 9797efc55f..e190e522d8 100644
--- a/tools/bq/schemas/observation_period.json
+++ b/tools/bq/schemas/observation_period.json
@@ -17,7 +17,7 @@
     {
         "type": "timestamp", 
         "name": "observation_period_start_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "date", 
@@ -27,7 +27,7 @@
     {
         "type": "timestamp", 
         "name": "observation_period_end_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "integer", 
diff --git a/tools/bq/schemas/procedure_occurrence.json b/tools/bq/schemas/procedure_occurrence.json
index f4a288d45c..e56bdff13b 100644
--- a/tools/bq/schemas/procedure_occurrence.json
+++ b/tools/bq/schemas/procedure_occurrence.json
@@ -22,7 +22,7 @@
     {
         "type": "timestamp", 
         "name": "procedure_datetime", 
-        "mode": "required"
+        "mode": "nullable"
     }, 
     {
         "type": "integer",