sql - 如何将图像加载到oracle数据库表中

Question

如何将图像加载到oracle数据库表中

假设我有一张像图片一样的桌子

CREATE TABLE image (img_id number
                  ,img_name varchar2(100)
                  ,img   BLOB) ;

谁能帮我吗

Answer 1

CREATE OR REPLACE DIRECTORY test_dir AS 'C:\'; 

DECLARE
  l_bfile  BFILE;
  l_blob   BLOB;
BEGIN
  INSERT INTO tab1 (col1, col2)
  VALUES (empty_blob(), 'test1')
  RETURN col1 INTO l_blob;

  l_bfile := BFILENAME('test_dir', 'Test.txt');
  DBMS_LOB.fileopen(l_bfile, Dbms_Lob.File_Readonly);
  DBMS_LOB.loadfromfile(l_blob, l_bfile, DBMS_LOB.getlength(l_bfile));
  DBMS_LOB.fileclose(l_bfile);

  COMMIT;
END;

Answer 2

如果文件在数据库服务器上，请参阅罗伯特的答案。

如果文件在 CLIENT 文件系统上，请使用 SQLLDR。例如：

SQL> CREATE TABLE tab1 (
  2    id number primary key,
  3    image      BLOB
  4  );

Table created.

SQL> host sqlldr user/pass@yourdb control=load_image.ctl

SQL*Loader: Release 11.2.0.2.0 - Production on Thu Nov 29 10:41:08 2012

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Commit point reached - logical record count 1

SQL> select * from tab1;

        ID
----------
IMAGE
--------------------------------------------------------------------------------
         1
FFD8FFE000104A46494600010101004800480000FFE111C44578696600004D4D002A00000008000B
010F00020000000100000000011000020000000100000000011200030000000100010000011A0005


SQL> select length(image) from tab1;

LENGTH(IMAGE)
-------------
       263508

SQL>

其中控制文件是这样的：

LOAD DATA 
INFILE 'images.txt'
INTO TABLE tab1
FIELDS TERMINATED BY ','
(id  ,
 image_filename    FILLER CHAR(100),
 image             LOBFILE(image_filename) TERMINATED BY EOF)

和一个示例 images.txt 文件：

1,foo.jpg