1. 如何创建带有CLOB类型字段的表?
7. 从哪个版本开始支持CLOB,BLOB等大字段?
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 SQL> ALTER TABLE TEST2 MOVE TABLESPACE USERS; 已更改表格. SQL> ...... Export done in ZHT16BIG5 character set and ZHT16BIG5 NCHAR character set About to export specified tables via Conventional Path ... SQL> drop table test2; 已删除表格. d:> imp test/test file=a.dmp tables=(test2); ......
2. 如何对带有CLOB类型字段的表增加记录?
3. 如何SELECT带有CLOB类型字段的表?
DBMS_LOB.INSTR(TEST2.AAA,'B',1,1)>0;
6. 如何IMP带有CLOB类型字段的表?
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
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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);
----------------------------------------------------------------------
-----------------------------------------------------------------------
CCBZZPCCBZZP
d:> exp test/test file=a.dmp tables=(test2)
. . exporting table TEST2 0 rows exported
Export terminated suclearcase/" target="_blank" >ccessfully without warnings.
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.