从blob列中选择一个特定的字符串

我有一个名为MSTCUSTOMERPROFILE的表有一个BLOB类型的列ROLELIST。现在，以XML格式如数据这个BLOB数据富人...从blob列中选择一个特定的字符串

<RoleListDTO> 
    <rolelist> 
    <RoleDTO> 
     <idEntity/> 
     <idEntityDesc/> 
     <userType>ECU</userType> 
     <userTypeDesc/> 
     <idRole>5</idRole> 
     <description>02A ENQUIRIES - ACCOUNT INFORMATION</description> 
     <idChannel>01</idChannel> 
     <idChannelDesc/> 
     <token/> 
     <datCreated/> 
     <createdBy/> 
     <datLastUpdated/> 
     <isDefaultRole>false</isDefaultRole> 
     <isDisplayCustProfile>false</isDisplayCustProfile> 
     <idcust/> 
     <typecust/> 
     <roleCreatebyUser> 
     <ListUserDTO> 
      <idEntity/> 
      <idEntityDesc/> 
      <userType/> 
      <userTypeDesc/> 
      <idChannel/> 
      <idChannelGroup/> 
      <idChannelDesc/> 
      <firstName/> 
      <lastName/> 
      <idChannelUser/> 
      <salutation/> 
      <idUser/> 
      <email/> 
      <isActive/> 
      <isProxyLocked/> 
      <isGroupFlag/> 
      <lockReason/> 
      <actDeactReason/> 
     </ListUserDTO> 
     </roleCreatebyUser> 
    </RoleDTO> 
    <RoleDTO> 
     <idEntity/> 
     <idEntityDesc/> 
     <userType>ECU</userType> 
     <userTypeDesc/> 
     <idRole>88</idRole> 
     <description>02C ENQUIRIES - CREDIT CARD DETAILS</description> 
     <idChannel>01</idChannel> 
     <idChannelDesc/> 
     <token/> 
     <datCreated/> 
     <createdBy/> 
     <datLastUpdated/> 
     <isDefaultRole>false</isDefaultRole> 
     <isDisplayCustProfile>false</isDisplayCustProfile> 
     <idcust/> 
     <typecust/> 
     <roleCreatebyUser> 
     <ListUserDTO> 
      <idEntity/> 
      <idEntityDesc/> 
      <userType/> 
      <userTypeDesc/> 
      <idChannel/> 
      <idChannelGroup/> 
      <idChannelDesc/> 
      <firstName/> 
      <lastName/> 
      <idChannelUser/> 
      <salutation/> 
      <idUser/> 
      <email/> 
      <isActive/> 
      <isProxyLocked/> 
      <isGroupFlag/> 
      <lockReason/> 
      <actDeactReason/> 
     </ListUserDTO> 
     </roleCreatebyUser> 
    </RoleDTO> 
    </rolelist> 
    <rmemail/> 
</RoleListDTO>

我想在BLOB获取内部<idRole>标签的数据，在这种情况下，它是88即我想获取结果。

我需要通过选择查询来做到这一点，是否可以在Oracle数据库中使用？怎么样？？

来源

2017-01-21 Hitesh Joshi

没有人可以回答如果XML将不可读格式..请格式 – XING

是的，你是对的。 –