大数据类型的操作之计划

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

减少臭味。　　加氧装置东侧南岸 DBMS_STR(A,\'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=P TABLES=(TEST2);

6. 如何IMP带有CLOB类型字段的表?

IMP USER/PASSWORD FILE=P 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 - Production

SQL 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_STR(A,\'B\',1,1)0;

AAA

-----------------------------------------------------------------------

CCBZZPCCBZZP

SQL ALTER TABLE TEST2 MOVE TABLESPACE USERS;

已更改表格.

SQL

d: exp test/test file=p 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=p 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.

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