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12 lines
935 B
SQL
12 lines
935 B
SQL
CREATE TRIGGER cascade_change_qu_id_stock2 AFTER UPDATE ON products WHEN NEW.qu_id_stock != OLD.qu_id_stock
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BEGIN
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-- See also the trigger "cascade_change_qu_id_stock BEFORE UPDATE ON products"
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-- This here applies the needed changes to the products table itself only AFTER the update
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UPDATE products
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SET quick_consume_amount = quick_consume_amount * IFNULL((SELECT factor FROM quantity_unit_conversions_resolved WHERE product_id = NEW.id AND from_qu_id = OLD.qu_id_stock AND to_qu_id = NEW.qu_id_stock LIMIT 1), 1.0),
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calories = calories / IFNULL((SELECT factor FROM quantity_unit_conversions_resolved WHERE product_id = NEW.id AND from_qu_id = OLD.qu_id_stock AND to_qu_id = NEW.qu_id_stock LIMIT 1), 1.0),
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tare_weight = tare_weight * IFNULL((SELECT factor FROM quantity_unit_conversions_resolved WHERE product_id = NEW.id AND from_qu_id = OLD.qu_id_stock AND to_qu_id = NEW.qu_id_stock LIMIT 1), 1.0)
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WHERE id = NEW.id;
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END;
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