build template for applying gl on the server side per item with offset

header_item_template.pgsql

@@ -0,0 +1,46 @@
+\timing
+with j as (
+SELECT
+$$
+    {"header":{"vendor":"Target","date":"10/12/2017","instrument":"Discover Card","module":"hdrio","total":47.74,"location":"Stow, OH","transaction":"purchase","offset":"dcard"},"item":[{"vend item":"HERBAL","amt":7.99,"account":"home supplies","item":"shampoo","reason":"hygiene"},{"vend item":"HERBAL","amt":7.99,"account":"home supplies","item":"conditioner","reason":"hygiene"},{"vend item":"BUILDING SET","amt":28.74,"account":"recreation","item":"legos","reason":"toys","qty":6,"uom":"ea"},{"vend item":"OH TAX","amt":3.02,"account":"sales tax","item":"sales tax","reason":"sales tax","rate":"0.0675"}]}
+$$::jsonb jb
+)
+,os AS (
+    SELECT
+        flag, 
+        sign,
+        x.offs
+    FROM
+        j
+        JOIN LATERAL
+        (
+            VALUES
+            ('ITEM',1,null),
+            ('OFFSET',-1,j.jb->'header'->>'offset')
+        ) x (flag, sign, offs) ON TRUE
+)
+,build AS (
+SELECT
+    array['item',rn::text]::text jpath
+    ,COALESCE(os.offs,ae.e->>'account') acct
+    ,(ae.e->>'amt')::numeric * os.sign amount
+FROM
+    j
+    LEFT JOIN LATERAL JSONB_ARRAY_ELEMENTS(J.JB->'item') WITH ORDINALITY ae(e,rn) ON TRUE
+    CROSS JOIN os
+ORDER BY
+    ae.rn ASC,
+    os.flag ASC
+)
+,agg AS (
+SELECT
+    jsonb_build_object('gl',jsonb_agg(row_to_json(b))) gl
+FROM
+    build b
+)
+SELECT
+    jsonb_pretty(agg.gl||j.jb)
+FROM
+    agg
+    CROSS JOIN j
+    

srce.pgsql

@@ -16,21 +16,13 @@ DECLARE _t text;
 DECLARE _c text;
 DECLARE _path text;
 DECLARE _srce text;
-<<<<<<< HEAD
-
-BEGIN
-
-    _path := 'C:\users\fleet\downloads\d1026.csv';
-    _srce := 'DCARD';
-=======
 DECLARE _log_info text;
 DECLARE _log_id text;
 
 BEGIN
 
-    _path := 'C:\users\ptrowbridge\downloads\llcol.csv';
-    _srce := 'PNCL';
->>>>>>> wk
+    _path := 'C:\users\fleet\downloads\discover-recentactivity-20171031.csv';
+    _srce := 'DCARD';
 	
 ----------------------------------------------------build the column list of the temp table----------------------------------------------------------------