ユニオンを試す:
SELECT table1.name, temperature, pressure
FROM table1 inner join table2 ON
table1.name = table2.name
UNION
SELECT table1.name, temperature, pressure
FROM table1 inner join table3 ON
table1.name = table3.name
編集:これらの結果から別の選択を行うことができ、次に制限、グループ化、または順序付けを行うことができます:
SELECT * FROM
(
SELECT table1.name, temperature, pressure
FROM table1 inner join table2 ON
table1.name = table2.name
UNION
SELECT table1.name, temperature, pressure
FROM table1 inner join table3 ON
table1.name = table3.name
) as JoinedTable
LIMIT 0, 1
編集2:各テーブル(テーブル2とテーブル3)から1行だけを取得するには、クエリごとに制限/グループ化/順序付けを使用できます(列の日付があると仮定):
SELECT table1.name, temperature, pressure
FROM table1 inner join table2 ON
table1.name = table2.name
ORDER BY date DESC
LIMIT 0, 1
UNION
SELECT table1.name, temperature, pressure
FROM table1 inner join table3 ON
table1.name = table3.name
ORDER BY date DESC
LIMIT 0, 1