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Finished qu unit conversion handling (closes #177)

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Bernd Bestel
2019-09-16 09:35:20 +02:00
parent c532a67884
commit a799f2b43f
18 changed files with 361 additions and 123 deletions
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25
migrations/0082.sql
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@@ -50,34 +50,55 @@ CREATE VIEW quantity_unit_conversions_resolved
AS
-- First: Product "purchase to stock" conversion factor
SELECT
p.id AS id, -- Dummy, LessQL needs an id column
p.id AS product_id,
p.qu_id_purchase AS from_qu_id,
qu_from.name AS from_qu_name,
p.qu_id_stock AS to_qu_id,
qu_to.name AS to_qu_name,
p.qu_factor_purchase_to_stock AS factor
FROM products p
JOIN quantity_units qu_from
ON p.qu_id_purchase = qu_from.id
JOIN quantity_units qu_to
ON p.qu_id_stock = qu_to.id
UNION
-- Second: Product specific overrides
SELECT
p.id AS id, -- Dummy, LessQL needs an id column
p.id AS product_id,
p.qu_id_stock AS from_qu_id,
quc.from_qu_id AS from_qu_id,
qu_from.name AS from_qu_name,
quc.to_qu_id AS to_qu_id,
qu_to.name AS to_qu_name,
quc.factor AS factor
FROM products p
JOIN quantity_unit_conversions quc
ON p.qu_id_stock = quc.from_qu_id
AND p.id = quc.product_id
JOIN quantity_units qu_from
ON quc.from_qu_id = qu_from.id
JOIN quantity_units qu_to
ON quc.to_qu_id = qu_to.id
UNION
-- Third: Default quantity unit conversion factors
SELECT
p.id AS id, -- Dummy, LessQL needs an id column
p.id AS product_id,
p.qu_id_stock AS from_qu_id,
qu_from.name AS from_qu_name,
quc.to_qu_id AS to_qu_id,
qu_to.name AS to_qu_name,
quc.factor AS factor
FROM products p
JOIN quantity_unit_conversions quc
ON p.qu_id_stock = quc.from_qu_id
AND quc.product_id IS NULL;
AND quc.product_id IS NULL
JOIN quantity_units qu_from
ON quc.from_qu_id = qu_from.id
JOIN quantity_units qu_to
ON quc.to_qu_id = qu_to.id;