Oracle number@H_403_3@

NUMBER [ (p [,s]) ]

Number having precision p and scale s. Theprecision p can range from 1 to 38. The scale s can range from -84 to 127. Bothprecision and scale are in decimal digits. A NUMBER value requires from 1 to 22bytes.

scale是可选的。@H_403_3@

sql> drop tablet_number purge;

Table dropped

sql> create tablet_number(id number(5),id1 number(5,3));

Table created

sql> insert intot_number values(10000.8999999999999999999999299988888888888889,10.003);

1 row inserted

sql> insert intot_number values(10000.8999999999999999999999299988888888888889,10.0034);

1 row inserted

sql> --insert intot_number values(10000.8999999999999999999999299988888888888889,100.003); --报错@H_403_3@

sql> commit;

Commit complete

sql> select * fromt_number;

IDID1

------ -------

1000110.003

1000110.003

在@H_403_3@Oracle中@H_403_3@NUMBER的定义：@H_403_3@

1、只有一个参数时，如@H_403_3@NUMBER(24)。表示所定义的数字最大可设置@H_403_3@24位整数。@H_403_3@

2、有两个参数时，如@H_403_3@NUMBER(38,3)。表示所定义的数字最大是@H_403_3@38位长，其中包含@H_403_3@3位小数。就是说这个类型最大可设置@H_403_3@35位整数和@H_403_3@3位小数。@H_403_3@

3、小数位超出长度会进行四舍五入，整数位超出长度报错@H_403_3@。@H_403_3@