{"provider_name":"Hatena Blog","image_url":null,"width":"100%","height":"190","version":"1.0","url":"https://sirocco.hatenadiary.org/entry/20090907/1252289846","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20090907%2F1252289846\" title=\"Gauche DBI(Postgresql) \u306e NULL \u306f &quot;&quot; \u3092\u8fd4\u3059\u3002 - sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"sirocco","type":"rich","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/sirocco/","published":"2009-09-07 11:17:26","title":"Gauche DBI(Postgresql) \u306e NULL \u306f \"\" \u3092\u8fd4\u3059\u3002","categories":["scheme","PostgreSQL"],"blog_url":"https://sirocco.hatenadiary.org/","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","description":"Gauche DBI(Postgresql) \u306e NULL \u306f \"\" \u3092\u8fd4\u3059\u3002 (use dbi) (use gauche.collection) (define (select-db dbname sql) (guard (e ((<dbi-error> e) (raise e))) (let* ((conn (dbi-connect (string-append \"dbi:pg:dbname=\" dbname))) (result (dbi-execute (dbi-prepare conn sql))) (getter (relation-accessor result))) (let \u2026"}