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请问各位大神,orAClE中UTL_RAW.CAST_TO_RAW函数是...

SELECT UTL_RAW.CAST_TO_RAW((SELECT 'ff' FROM dual)) from dual;

字符集问题 你的PL/SQL DEV的字符集不对 UTL_RAW.CAST_TO_VARCHAR2 converts a raw value into a value of data type VARCHAR2 with the same number of data bytes. The result is treated as if it were composed of single 8-bit bytes, not ...

是内置函数 cast 是进行类型转换的, 可以针对各种Oracle数据类型. 修改的是用户的数据类型. 如: select cast(a as int) from t1 select cast(a as number(8,4)) from t1

SQL> create database link lnkrac connect to system identified by oracle using 'testrac'; Database link created. SQL> select count(*) from dba_objects@lnkrac; COUNT(*) ---------- 87031 SQL> set timing on SQL> select utl_raw.cast...

1. base64 decode select utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('dGVzdA=='))) from dual 2. base64 encode select utl_raw.cast_to_varchar2(utl_encode.base64_encode(utl_raw.cast_to_raw('test'))) from ...

本文将给大家讲解关于oracle数据库blob类型如何转换为varchar2 : 据说没有数据的时候可以直接转换,试过了也可以,但是一般都是由数据了才会去修改,麻烦产生,直接修改不了,只能通过函数来解决;总的思路是:创建临时字段B→将要转换的字段A放...

我用你写的sql可以正确执行,可能是工具的问题,但是你的写法是有问题的。 将字符串类型转换成数字型数据,oracle提供了TO_NUMBER()函数 这种写法就很少会出现问题: select cast(to_number('321312') AS NUMBER(8,2)) from dual;

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