[Oracle]大数据类型的操作之CLOB

1. 如何创建带有CLOB类型字段的表? CREATE TABLE TEST2 (AAA CLOB);2. 如何对带有CLOB类型字段的表增加记录?INSERT INTO TEST2 VALUES('CCBZZPCCBZZP');3. 如何SELECT带有CLOB类型字段的表? SELECT * FROM TEST2;SELECT * FROM TEST2 WHERE DBMS_LOB.INSTR(TEST2.AAA,'B',1,1)>0;4. 如何对带有CLOB类型字段的表更换表空间? ALTER TABLE TEST2 MOVE TABLESPACE USERS;5. 如何EXP带有CLOB类型字段的表? EXP USER/PASSWord FILE=A.DMP TABLES=(TEST2);6. 如何IMP带有CLOB类型字段的表? IMP USER/PASSWORD FILE=A.DMP FULL=Y;7. 从哪个版本开始支持CLOB,BLOB等大字段? 以上测试环境为Oracle92 SQL*Plus: Release 9.2.0.1.0 - ProdUCtion on 星期四 9月 4 12:02:00 2003;Copyright ? 1982, 2002, Oracle Corporation. All rights reserved. 联机到: Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production With the Partitioning, OLAP and Oracle Data Mining options JServer Release 9.2.0.1.0 - ProductionSQL> DROP TABLE TEST2; DROP TABLE TEST2 * ERROR 在行 1: ORA-00942: 表格或视观表不存在 SQL> CREATE TABLE TEST2 (AAA CLOB); 已建立表格. SQL> INSERT INTO TEST2 VALUES('CCBZZPCCBZZP'); 已建立 1 个数据列. SQL> SELECT * FROM TEST2; AAA -------------------------------------;CCBZZPCCBZZP SQL> SELECT * FROM TEST2 WHERE DBMS_LOB.INSTR(TEST2.AAA,'B',1,1)>0; AAA ----------------------------------- CCBZZPCCBZZP SQL> ALTER TABLE TEST2 MOVE TABLESPACE USERS; 已更改表格. SQL> d:> exp test/test file=a.dmp tables=(test2) ...... Export done in ZHT16BIG5 character set and ZHT16BIG5 NCHAR character set About to export specified tables via Conventional Path ... . . exporting table TEST2 0 rows exported Export terminated successfully without warnings. SQL> drop table test2; 已删除表格. d:> imp test/test file=a.dmp tables=(test2); ;...... import done in ZHT16BIG5 character set and ZHT16BIG5 NCHAR character set . importing TEST's objects into TEST . . importing table 'TEST2' 0 rows imported Import terminated successfully without warnings.