BLOB 存入文件

1.向blob字段插入文本INSERT INTO lobdemo (key, clob_col, blob_col, bfile_col) VALUES (51, 'This is another character literal', HEXTORAW('ABABABABABABABABABAB'),  NULL);2.更新blob字段文本UPDATE peoplesoft  SET SUPPLIER_ID = HEXTORAW('CDCDCDCDCDCDCDCDCDCDCDCD') where rownum =2;update PEOPLESOFT_1M set supplier_id = utl_raw.cast_to_raw(vendor_id) ;3.向blob字段插入文件CREATE TABLE yuser (ID number,photo BLOB);create or replace directory images as '/test'; declare   l_bfile bfile;   l_blob blob; begin   insert into yuser(ID,photo) values(1,empty_blob())   return photo into l_blob;   l_bfile:=bfilename('IMAGES','test.doc'); --IMAGES 是上面创建目录的大写   dbms_lob.open(l_bfile,dbms_lob.file_readonly);   dbms_lob.loadfromfile(l_blob,l_bfile,dbms_lob.getlength(l_bfile));   dbms_lob.close(l_bfile);   commit; end; /

update的方式

declare   l_bfile bfile;   l_blob blob; begin   update yuser set photo = empty_blob() where id = 2   return photo into l_blob;   l_bfile:=bfilename('IMAGES','PS.pdf');   dbms_lob.open(l_bfile,dbms_lob.file_readonly);   dbms_lob.loadfromfile(l_blob,l_bfile,dbms_lob.getlength(l_bfile));   dbms_lob.close(l_bfile);   commit; end; 、