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[Oracle]大數據類型的操作之CLOB
瀏覽：224日期：2023-11-22 08:57:22
1. 如何創建帶有CLOB類型字段的表? CREATE TABLE TEST2 (AAA CLOB);2. 如何對帶有CLOB類型字段的表增加記錄?INSERT INTO TEST2 VALUES('CCBZZPCCBZZP');3. 如何SELECT帶有CLOB類型字段的表? SELECT * FROM TEST2;SELECT * FROM TEST2 WHERE DBMS_LOB.INSTR(TEST2.AAA,'B',1,1)>0;4. 如何對帶有CLOB類型字段的表更換表空間? ALTER TABLE TEST2 MOVE TABLESPACE USERS;5. 如何EXP帶有CLOB類型字段的表? EXP USER/PASSWord FILE=A.DMP TABLES=(TEST2);6. 如何IMP帶有CLOB類型字段的表? IMP USER/PASSWORD FILE=A.DMP FULL=Y;7. 從哪個版本開始支持CLOB,BLOB等大字段? 以上測試環境為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. 聯機到: 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: 表格或視觀表不存在 SQL> CREATE TABLE TEST2 (AAA CLOB); 已建立表格. SQL> INSERT INTO TEST2 VALUES('CCBZZPCCBZZP'); 已建立 1 個數據列. 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; 已刪除表格. 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.
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