サブクエリ LEFT JOIN
サブクエリ（副クエリ）とLEFT JOIN（レフト ジョイン）のSQLサンプル
SELECT table1.*, count.count FROM table1 LEFT JOIN
(SELECT table1_id, count(table1_id) FROM table2 WHERE 条件 GROUP BY table2.table1_id) as count
ON table1.id = count.table1_id WHERE 条件 ORDER BY 条件 OFFSET 条件 LIMIT 条件
SELECT table1.*, count.count FROM table1 LEFT JOIN
(SELECT table1_id, count(table1_id) FROM table2 WHERE 条件 GROUP BY table2.table1_id) as count
ON table1.id = count.table1_id WHERE 条件 ORDER BY 条件 OFFSET 条件 LIMIT 条件
関連 2012-02-09 17:59:45