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---------数学函数1.绝对值S:select abs(-1) valueO:select abs(-1) value from dual2.取整(大)S:select ceiling(-1.001) valueO:select ceil(-1.001) value from dual3.取整(小)S:select floor(-1.001) valueO:select floor(-1.0... 阅读全文
posted @ 2007-06-29 16:32
tohen
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posted @ 2007-06-29 12:28
tohen
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