Home Database Mysql Tutorial Oracle ORA-01722 错误解决

Oracle ORA-01722 错误解决

Jun 07, 2016 pm 05:33 PM

对于ldquo;ORA-01722:无效数字错误rdquo; 以前总遇到,今天又遇到了!

对于“ORA-01722:无效数字错误” 以前总遇到,今天又遇到了!

产生的情况:

查出的字段中,,需要转化为number型的时候,比较常见。

例如 ,创建物化视图时,如果有某一个列需要转成number的时候,就很常见,

create materialized view mv_test as

select name,

to_number(zd1) zd1, --  @1

cast(zd2 as number) zd2  --@2

from abc

where to_number(zd3)=10 ; --@3

@1 为 select 中的 to_number 时出现,

@ 2为 select 中的cast 函数时出现,

@3 为where条件中,使用to_number时出现。

注意:@1 与@2中是创建物化视图或者select 创建表或者 只是查询时并全部展开时会出现。

解决方法:

1)nvl空转化为数字 , 如,to_number(nvl(z1,0)) ,cast(nvl(zd2) as number)

2)  在1方法无法解决的时候,就是存在无法转化为number的值存在,就是说该字段中存在其他类型的数据,比如字符,

这个时候,转化为varchar或varchar2或保持原数据类型, 如,cast(zd1 as varchar2(32))

相关阅读:

ORA-01172、ORA-01151错误处理

ORA-00600 [2662]错误解决

ORA-01078 和 LRM-00109 报错解决方法

ORA-00471 处理方法笔记

ORA-00314,redolog 损坏,或丢失处理方法

ORA-00257 归档日志过大导致无法存储的解决办法

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