DBMS_LOB.SUBSTR: Select the first 50 characters of clob_col, and the first 25 bytes of blob_col, for each row. : dbms_lob « System Packages « Oracle PL / SQL

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Oracle PL / SQL » System Packages » dbms_lob 
DBMS_LOB.SUBSTR: Select the first 50 characters of clob_col, and the first 25 bytes of blob_col, for each row.
  
SQL>
SQL>
SQL> CREATE TABLE lobdemo (
  2    key NUMBER,
  3    clob_col CLOB,
  4    blob_col BLOB);

Table created.

SQL>
SQL>
SQL> column CLOB_Data format a60
SQL> column BLOB_Data format a60
SQL> SELECT key,
  2         DBMS_LOB.SUBSTR(clob_col, 50CLOB_Data,
  3         DBMS_LOB.SUBSTR(blob_col, 25BLOB_Data
  4    FROM lobdemo
  5    WHERE key IN (0100101102103100010011002)
  6    ORDER BY key;

no rows selected

SQL>
SQL> drop table lobdemo;

Table dropped.

SQL>

   
  
Related examples in the same category
1. Use dbms_lob.getchunksize to get the clob column size
2. Call dbms_lob.write to write value to clob type value
3. Use dbms_lob.writeappend to append value to clob type value
4. Use dbms_lob.compare to compare
5. Use dbms_lob.compare to compare clob type value with offset
6. Use dbms_lob for load clob data from file
7. This block demonstrates the use of DBMS_LOB.COPY.
8. This block demonstrates DBMS_LOB.GETLENGTH.
9. Use DBMS_LOB.GETLENGTH to get the length of a clob type variable
10. DBMS_LOB.CREATETEMPORARY
11. DBMS_LOB.ERASE
12. DBMS_LOB.FREETEMPORARY
13. DBMS_LOB.ISTEMPORARY
14. DBMS_LOB.READ
15. DBMS_LOB.WRITE
16. This script tests the DBMS_LOB.LOADFROMFILE procedure
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