SELECT
CASE WHEN QuantityPart =< Threshold
THEN (Threshold - QuantityPart) + Threshold
END as RecommendedReorderQuantity, *
FROM parts, stock
任何人都可以帮助的问题吗?
SELECT *,
CASE WHEN QuantityPart =< Threshold
THEN (Threshold - QuantityPart) + Threshold
END as RecommendedReorderQuantity
FROM parts INNER JOIN stock
ON parts.PartID = stock.PartID
有什么确切的问题? – Sean