tps/header_item_template.pgsql

46 lines
1.4 KiB
PL/PgSQL

\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