如何在Oracle 10g中重命名表列

我想知道：如何在Oracle 10g中重命名表列？

SQL> create table a(id number);

Table created.

SQL> alter table a rename column id to new_id;

Table altered.

SQL> desc a
 Name                                      Null?    Type
 ----------------------------------------- -------- -----------
 NEW_ID                                             NUMBER

查询的语法如下：

Alter table <table name> rename column <column name> to <new column name>;

例：

Alter table employee rename column eName to empName;

要将没有空格的列名重命名为带有空格的列名：

Alter table employee rename column empName to "Emp Name";

要将带有空格的列重命名为没有空格的列名称：

Alter table employee rename column "emp name" to empName;

alter table table_name rename column oldColumn to newColumn;

假设supply_master是一个表，并且

SQL>desc supply_master;


SQL>Name
 SUPPLIER_NO    
 SUPPLIER_NAME
 ADDRESS1       
 ADDRESS2       
 CITY           
 STATE          
 PINCODE  


SQL>alter table Supply_master rename column ADDRESS1 TO ADDR;
Table altered



SQL> desc Supply_master;
 Name                   
 -----------------------
 SUPPLIER_NO            
 SUPPLIER_NAME          
 ADDR   ///////////this has been renamed........//////////////                
 ADDRESS2               
 CITY                   
 STATE                  
 PINCODE                  

alter table table_name 
rename column old_column_name/field_name to new_column_name/field_name;

例： alter table student column name to username;