这个demo读取oracle longraw类型的字段为空，读不出来 The demo reads the Oracle Field as null for the LONGRAW type

[zhang-xiansheng]

我用这个DEMO 读取oracle 数据库中longraw字段，但是读出来的都是0字节，是oracle.entityframeworkcore.dll不支持吗？
例如：表A(ID,Name)，B（ID，AID,photo）photo是longraw类型,查询语句
select a.ID,b.photo from A a join B b on a.ID=B.AID

结果显示b.photo是0bytes，数据库中b.photo是有数据的

I used this DEMO to read the longraw field in the Oracle database, but it was all 0 Bytes, oracle. Entity frameworkcore.dll Is not supported? For example,
table A( ID, Name), B (ID, AID, photo) photo is LongRaw ,

select a.ID,b.photo from A a join B b on a.ID=B.AID

results show that B. Photo is 0bytes