Add EXTERNAL SQL scripts

EXTERNAL/CHPA/01 dwd_ims_atc_hierarchy.sql

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+-- Databricks notebook source
+--dwd to dws
+--清洗数据的操作
+
+
+---处理宽维度表 202108
+--PRINT(GETDATE())
+
+---ATC 处理成宽表
+
+insert overwrite table dwd.dwd_ims_atc_hierarchy 
+SELECT * --into DIM_ATC_Hierarchy
+  FROM (SELECT Therapeutic_ID AS ATC1_ID,
+               Therapeutic_Code AS ATC1_CODE,
+               Therapeutic_Name AS ATC1_DES
+          FROM dwd.dwd_ims_td_therapeutic_class ATC
+         WHERE ATC. Therapeutic_Level = '1') ATC1
+
+  LEFT JOIN (SELECT Therapeutic_ID AS ATC2_ID,
+                    Therapeutic_Code AS ATC2_CODE,
+                    Therapeutic_Name AS ATC2_DES
+               FROM dwd.dwd_ims_td_therapeutic_class ATC
+              WHERE ATC. Therapeutic_Level = '2') ATC2
+    ON ATC1. ATC1_CODE =
+  LEFT (ATC2. ATC2_CODE, 1)
+
+  LEFT JOIN (SELECT Therapeutic_ID AS ATC3_ID,
+                    Therapeutic_Code AS ATC3_CODE,
+                    Therapeutic_Name AS ATC3_DES
+               FROM dwd.dwd_ims_td_therapeutic_class ATC
+              WHERE ATC. Therapeutic_Level = '3') ATC3
+    ON ATC2. ATC2_CODE =
+  LEFT (ATC3. ATC3_CODE, 3)
+
+  LEFT JOIN (SELECT Therapeutic_ID AS ATC4_ID,
+                    Therapeutic_Code AS ATC4_CODE,
+                    Therapeutic_Name AS ATC4_DES
+               FROM dwd.dwd_ims_td_therapeutic_class ATC
+              WHERE ATC. Therapeutic_Level = '4') ATC4
+    ON ATC3. ATC3_CODE =
+  LEFT (ATC4. ATC4_CODE, 4)
+;