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HomeDatabaseMysql TutorialOracle数据库报bug,表或试图不存在,表名中包含空格

Oracle数据库报bug,表或试图不存在,表名中包含空格

Jun 07, 2016 pm 03:20 PM
bugoracledoes not existIncludedatabasespaceTable Nameattempt

一 1.开始:通过powderDesiger导出的SQL代码中的字段都是小写的,然后直接导入了oracle. 2.bug:无法修改表结构(在PL/SQL Developer中)---包括增加删除修改... 3. 明明该表是存在的,删除时报:表或视图不存在~!第 1 行出现错误:ORA-00942: 表或视图不存在后来终

1.开始:通过powderDesiger导出的SQL代码中的字段都是小写的,然后直接导入了oracle.

2.bug:无法修改表结构(在PL/SQL Developer中)---包括增加删除修改...

3.

明明该表是存在的,删除时报:表或视图不存在~!

第 1 行出现错误:
ORA-00942: 表或视图不存在

后来终于找出原因是因为我的表名是小写的,而是大写的则不会出现这个问题。
正常情况下....数据字典里面的数据都是大写,,,,动态视图都是小写的........在用关键字做表或其它对象的名时用""

所以表名用""引起来就行了
如何删除表时用了CASCADE CONSTRAINTS则会把与它相关的约束一起删除

而需要删除的表格可以用一个select查询出来,代码如下


--查询外键约束  
select 'Alter table '||TABLE_NAME||' '||'drop constraint'||' '|| CONSTRAINT_NAME||';'
  from user_constraints  
  where CONSTRAINT_TYPE ='R'  
  and TABLE_NAME like 'TA/_%' escape '/';
--查询表名
 select 'drop table '||TABLE_NAME||' '||';'
  from user_tables
  where TABLE_NAME like 'TA/_%' escape '/';


二.

1.生成表的时候,表名没有检查,直接建表,结果,表既有主键,又有外键,删除啊删除不了,双引号引起来没有效果

2.报bug,无效字符,或者表或视图不存在的bug

3.解决,改表名,然后删除

代码:ALTER TABLE "TBL_CERT IFICATE _TYPE" rename to "TABLE2";

此处,双引号引起表名,此处的双引号的作用,与之前双引号的作用不一样,之前双引号引的是小写的表名,,此处引起的是不连续的表名




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