Use dbms_lob.getlength and dbms_lob.substr with blob type column : DBMS_LOB « System Packages « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » System Packages » DBMS_LOB

31. 12. 6. Use dbms_lob.getlength and dbms_lob.substr with blob type column


SQL>

SQL> create table demo

  2  ( id           int primary key,

  3    theBlob      blob

  4  )

  5  /



Table created.



SQL>

SQL> select id, dbms_lob.getlength(theBlob) len, clean(theBlob) piece, dbms_lob.substr(theBlob,40,1) raw_data

  2  from demo

  3  where id =1

  4  /



no rows selected



SQL> drop table demo;



Table dropped.

31. 12. DBMS_LOB
	31. 12. 1.	DBMS_LOB Package
	31. 12. 2.	Print clob data out
	31. 12. 3.	Use dbms_lob.getlength to get the length of a clob data
	31. 12. 4.	Show Java source file
	31. 12. 5.	Use dbms_lob package to deal with clob data
	31. 12. 6.	Use dbms_lob.getlength and dbms_lob.substr with blob type column
	31. 12. 7.	Use dbms_lob.substr to get part of clob data
	31. 12. 8.	DBMS_LOB.READ
	31. 12. 9.	Load a file

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