add labs

lab/json/01_convert_md_to_json.sql

@@ -0,0 +1,111 @@
+
+set serveroutput on
+set long 999999
+set linesize 200
+set pagesize 5000
+
+/* --------------------------------
+
+CREATE COLLECTION TABLE
+
+-------------------------------- */ 
+DROP TABLE IF EXISTS parsed_markdown_files;
+
+CREATE JSON COLLECTION TABLE IF NOT EXISTS parsed_markdown_files;
+
+
+
+/* --------------------------------
+
+CONVERT MD TO JSON 
+
+-------------------------------- */ 
+exec CONVERT_MDFILES_TO_JSON
+
+
+/* --------------------------------
+
+CONSULTAS
+
+-------------------------------- */ 
+-- json collection
+SELECT json_serialize(data returning clob pretty) AS json_data 
+FROM parsed_markdown_files;
+
+
+-- merchants
+SELECT docs.category, 
+       docs.name
+FROM parsed_markdown_files,
+     JSON_TABLE(data, '$.comercios[*]'
+                COLUMNS (
+                  name              VARCHAR2(4000) PATH '$.name',
+                  category          VARCHAR2(4000) PATH '$.category'                  
+                )) docs
+ORDER BY category, name;
+
+
+-- beneficios por nivel
+SELECT docs.nivel, 
+       docs.percentual_reintegro,        
+       docs.reintegro_maximo_gs
+FROM parsed_markdown_files,
+     JSON_TABLE(data, '$.beneficios_por_nivel[*]'
+                COLUMNS (
+                  nivel                   VARCHAR2(100) PATH '$.nivel',
+                  percentual_reintegro    NUMBER       PATH '$.percentual_reintegro',                  
+                  reintegro_maximo_gs     NUMBER       PATH '$.reintegro_maximo_gs'
+                )) docs
+ORDER BY 1;
+
+
+-- Comércios por categoria
+SELECT category, COUNT(*) AS qtd
+  FROM parsed_markdown_files t,
+       JSON_TABLE(t.data, '$.comercios[*]'
+         COLUMNS (
+           category          VARCHAR2(200) PATH '$.category'           
+         ))
+ GROUP BY category
+ ORDER BY qtd DESC;
+
+
+-- JSON Dot-Notation
+SELECT 
+    docs.data.promocao.titulo.string() as  titulo,
+    docs.data.promocao.vigencia.data_inicio || ' a ' || docs.data.promocao.vigencia.data_fim as vigencia,
+    docs.data.medios_pago.rede as rede,
+    docs.data.medios_pago.qr_permitido as qr_permitido    
+FROM parsed_markdown_files docs;
+
+
+
+/* --------------------------------
+
+DUALITY VIEW
+
+-------------------------------- */ 
+-- convert
+DECLARE
+  schema_sql clob;
+BEGIN
+  schema_sql := dbms_json_duality.infer_and_generate_schema(
+                json('{"tableNames"     : [ "PARSED_MARKDOWN_FILES" ],
+                       "viewNames"      : [ "T" ],                       
+                       "useFlexFields"  : false,
+                       "updatability"   : true,
+                       "sourceSchema"   : "APP_USER"}')
+                );
+
+  execute immediate schema_sql;
+
+  dbms_json_duality.import(table_name => 'PARSED_MARKDOWN_FILES', view_name => 'T');
+
+  execute immediate 'rename T TO V_PARSED_MARKDOWN_FILES';
+END;
+/
+
+
+SELECT * FROM T_ROOT;
+SELECT * FROM T_BENEFICIOS_POR_NIVEL;
+SELECT * FROM T_COMERCIOS;