摘要:
1.绝对值 SQL:select abs(-1) value O:select abs(-1) value from dual 2.取整(大) S:select ceiling(-1.001) value O:select ceil(-1.001) value from dual 3.取整(小) S:select floor(-1.001) value O:select floor(-1... 阅读全文
posted @ 2010-08-07 17:33 误人子弟 阅读(1233) 评论(1) 推荐(0)
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