{"version":"1.0","provider_url":"https://hatena.blog","title":" EJB 3.0(Public Draft)\u5165\u9580\u8a18 Java Persistence API Chapter4 \u305d\u306e7","description":"EJB QL \u306e GROUP BY \u3068 HAVING\u306b\u3064\u3044\u3066\u3067\u3059\u3002 EJB QL\u3092\u4f7f\u3063\u3066\u52d5\u304b\u3057\u3066\u307f\u307e\u3059\u304c\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u5b9a\u7fa9\u306fChapter 4 \u305d\u306e4\u3067\u4f5c\u6210\u3057\u305f\u3082\u306e\u3092\u4f7f\u3044\u307e\u3059\u30024.7 GROUP BY, HAVINGSQL\u3068\u540c\u3058\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u306d\u3002\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u3002 select count(l) from LineItem l group by l.order having count(l) > 2 \u305f\u3060\u6b21\u306e\u306f\u99c4\u76ee\u3067\u3057\u305f\u3002 select l.order, count(l) from LineItem l group by l.order having count(l) > 2 --\u8aa4\u3063\u305f\u30af\u30a8\u30ea\u2026","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftaedium.hatenadiary.org%2Fentry%2F20051029%2Fp3\" title=\" EJB 3.0(Public Draft)\u5165\u9580\u8a18 Java Persistence API Chapter4 \u305d\u306e7 - taedium\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","author_url":"https://blog.hatena.ne.jp/taedium/","type":"rich","image_url":null,"categories":["EJB\u5165\u9580\u8a18"],"url":"https://taedium.hatenadiary.org/entry/20051029/p3","blog_url":"https://taedium.hatenadiary.org/","author_name":"taedium","blog_title":"taedium\u306e\u65e5\u8a18","provider_name":"Hatena Blog","published":"2005-10-29 00:00:03"}