Grüße Euch, wie schreibt an SQL z.B. eine .JPG Imagedatei in ein IMAGE Feld?

VG Franz

asked 24 Jan, 09:19

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Franz_Stf
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accept rate: 0%

edited 24 Jan, 10:56

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Volker Barth
39.2k353537806


You can use xp_read_file() to load the file's contents, and then just use the return value as value within an INSERT and/or UPDATE statement, such as

UPDATE MyTable
SET MyImage = xp_read_file('c:\\Gallery\\MyTest.jpg')
WHERE ID = 1;

Column MyTable should be of LONG BINARY (or IMAGE) data type. This should work for any kind of BLOBs (binary large objects).

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answered 24 Jan, 10:54

Volker%20Barth's gravatar image

Volker Barth
39.2k353537806
accept rate: 33%

edited 24 Jan, 10:56

Danke, hat geklappt! Wie funktioniert der umgekehrte Fall, also das BLOB auslesen...? VG Franz

(25 Jan, 06:54) Franz_Stf
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Similarly you can use xp_write_file() to store a BLOB's contents in a OS file, such as

SELECT xp_write_file('c:\\Gallery\\MyTestKopie.jpg', MyImage)
FROM MyTable
WHERE ID = 1;

Of course, you can also use local variables within SQL to handle BLOBs, such as

begin
   declare myVar long binary;
   set myVar = xp_read_file('c:\\Gallery\\MyTest.jpg');
   xp_write_file(myBlob, ('c:\\Gallery\\MyTestKopie.jpg', myVar);
end;

Both file functions are server-based and use path specifications that must be accessible for the database engine. For client-side access, you can use READ_CLIENT_FILE() resp. WRITE_CLIENT_FILE().

(25 Jan, 08:44) Volker Barth

Danke, hat auch geklappt. Aber mit den Proportionen der Bilder hab ich meine Probleme, aber das ist ein Anzeigeproblem. Vielen Dank nochmal!

(25 Jan, 10:30) Franz_Stf
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question asked: 24 Jan, 09:19

question was seen: 192 times

last updated: 25 Jan, 10:30