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Oracle » DDL » Design »
Changing a column's type or name
-- Change Type
ALTER TABLE CORPORATION MODIFY (COMPANY_NM VARCHAR2(100));
alter table employee modify ( last_name varchar2(40) );
-- Change Name
alter table employee rename column last_name to last_nm ;
Oracle : Related Topics
Oracle : DDL : Creating a table
Oracle : DDL : Creating indexes
Oracle : DDL : Creating constraints
Oracle : DDL : Creating and using a sequence
Oracle : DDL : Synonyms and Database Links
Oracle : DDL : Partitioned Tables
Oracle : DDL : Alter a column
Oracle : DDL : Creating an index with the nosort option
Oracle : DDL : Oracle data types
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