shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ Oracle Oracle SIGN 1より大きかったら1 -1より小さかったら-1 それ以外ならそのままの値を返す 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… 190 <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> Hatena Blog https://hatena.blog 2018-02-02 01:11:31 rich https://www.shigemk2.com/entry/2018/02/02/Oracle_SIGN 1.0 100%