0953デフォルトの名無しさん
2018/09/14(金) 18:33:15.77ID:JMy0VfN7[products].[price]を求めるSQLをそのまま書くかJOIN使った方が良い。
UPDATE [working]
SET [working].[value] = (SELECT [products].[price]
FROM [products]
WHERE ((([working].[name])=[products].[name])));
UPDATE [working]
INNER JOIN [products]
ON [working].[name]=[products].[name]
SET [working].[value] = [products].[price];
スマホからテキトーに書いてるので間違ってたらスマン。