Oracle PL/SQL/Large Objects/Insert — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
|
Текущая версия на 10:02, 26 мая 2010
LOB manipulations using DML statements.
SQL>
SQL> set serveroutput on
SQL>
SQL>
SQL> CREATE TABLE lobdemo (
2 key NUMBER PRIMARY KEY,
3 clob_col CLOB,
4 blob_col BLOB,
5 bfile_col BFILE
6 );
Table created.
SQL>
SQL> INSERT INTO lobdemo (key, clob_col, blob_col, bfile_col)
2 VALUES (50, "This is a character literal",
3 HEXTORAW("FEFEFEFEFEFEFEFEFEFE"),
4 NULL);
1 row created.
SQL>
SQL> INSERT INTO lobdemo (key, clob_col, blob_col, bfile_col)
2 VALUES (51, "This is another character literal",
3 HEXTORAW("ABABABABABABABABABAB"),
4 NULL);
1 row created.
SQL>
SQL> drop table lobdemo;
Table dropped.
SQL>
Use "Insert ... select" statement with CLOB, BLOB and BFILE
SQL>
SQL>
SQL> CREATE TABLE lobdemo (
2 key NUMBER PRIMARY KEY,
3 clob_col CLOB,
4 blob_col BLOB,
5 bfile_col BFILE
6 );
Table created.
SQL>
SQL> INSERT INTO lobdemo (key, clob_col, blob_col, bfile_col)
2 VALUES (50, "This is a character literal",
3 HEXTORAW("FEFEFEFEFEFEFEFEFEFE"),
4 NULL);
1 row created.
SQL>
SQL> INSERT INTO lobdemo (key, clob_col, blob_col, bfile_col)
2 VALUES (51, "This is another character literal",
3 HEXTORAW("ABABABABABABABABABAB"),
4 NULL);
1 row created.
SQL>
SQL>
SQL> INSERT INTO lobdemo
2 SELECT key + 10, clob_col, blob_col, NULL
3 FROM lobdemo
4 WHERE key IN (50, 51);
2 rows created.
SQL>
SQL> drop table lobdemo;
Table dropped.
SQL>