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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 是上面創建目錄的大寫 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; 、
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