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Jun 07, 2016 pm 04:20 PM

ORA-01438: 值大于此列指定的允许精确度比如定义为number(4,2)，却要插入一个值200.12的话，就会出错啊，原因是number(p，s)的问题。 number(p，s)，其中p表示该number的总长度，s为小数位。如果s为负数，则会取相应位数的取整。例如，如果number(4，-3)

　　ORA-01438: 值大于此列指定的允许精确度

　　比如定义为number(4,2)，却要插入一个值200.12的话，就会出错啊，原因是number(p，s)的问题。

　　number(p，s)，其中p表示该number的总长度，，s为小数位。

　　如果s为负数，则会取相应位数的取整。

　　例如，如果number(4，-3)，则数字1234的存储值为1000;如果number(4，-2)，则数字1234的存储值为1200。

　　在对数据库表中的字段设定类型时，要注意：

　　NUMBER(10,6) Double 带有小数

　　NUMBER(4) Long

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