Initialize BLOB column data : BLOB « Large Objects « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Large Objects » BLOB

34. 3. 2. Initialize BLOB column data


SQL> CREATE TABLE myTable (

  2    id          INTEGER PRIMARY KEY,

  3    blob_column BLOB NOT NULL

  4  );



Table created.



SQL>

SQL> INSERT INTO myTable(id, blob_column) VALUES (1, EMPTY_BLOB());



1 row created.



SQL>

SQL> drop table myTable;



Table dropped.



SQL>

34. 3. BLOB
	34. 3. 1.	Creating Tables Containing BLOB Objects
	34. 3. 2.	Initialize BLOB column data
	34. 3. 3.	Adding Content to a BLOB
	34. 3. 4.	Use update statement to change the value in blob type column
	34. 3. 5.	UPDATE sets blob_column to a binary number:
	34. 3. 6.	Open the BLOB
	34. 3. 7.	Loading a page to a BLOB
	34. 3. 8.	Populating a BLOB column from an external BFILE
	34. 3. 9.	INSERT a row with an empty blob
	34. 3. 10.	Display the length of the BLOB
	34. 3. 11.	Obtain length of the populated BLOB
	34. 3. 12.	Close the BLOB

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