{"version":"1.0","author_url":"https://blog.hatena.ne.jp/shigemk2/","type":"rich","published":"2018-02-02 01:11:31","provider_url":"https://hatena.blog","width":"100%","image_url":null,"blog_url":"https://www.shigemk2.com/","blog_title":"by shigemk2","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2018%2F02%2F02%2FOracle_SIGN\" title=\"Oracle SIGN - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","categories":["Oracle"],"url":"https://www.shigemk2.com/entry/2018/02/02/Oracle_SIGN","author_name":"shigemk2","description":"Oracle SIGN 1\u3088\u308a\u5927\u304d\u304b\u3063\u305f\u30891 -1\u3088\u308a\u5c0f\u3055\u304b\u3063\u305f\u3089-1 \u305d\u308c\u4ee5\u5916\u306a\u3089\u305d\u306e\u307e\u307e\u306e\u5024\u3092\u8fd4\u3059 SQL> select SIGN(1) from dual; SIGN(1) ---------- 1 SQL> select SIGN(-1) from dual; SIGN(-1) ---------- -1 SQL> select SIGN(0) from dual; SIGN(0) ---------- 0 SQL> select SIGN(999) from dual; SIGN(999) ---------- 1 https://docs.oracle.com/en/databa\u2026","title":"Oracle SIGN"}