カテゴリ内の記事の数を数える
SELECT
t.id AS id,
t.typeName AS typeName,
count( * ) AS num
FROM
articles a
LEFT JOIN articletype t ON a.typeID = t.id
WHERE
t.isShow
カテゴリ内の記事の数を数える
SELECT
t.id AS id,
t.typeName AS typeName,
count( * ) AS num
FROM
articles a
LEFT JOIN articletype t ON a.typeID = t.id
WHERE
t.isShow