ORA-01430 Error Message
Learn the cause and how to resolve the ORA-01430 error message in Oracle.
Description
When you encounter an ORA-01430 error, the following error message will appear:
- ORA-01430: column being added already exists in table
Cause
You tried to add a column to a table, but the column name already exists in that table.
Resolution
The option(s) to resolve this Oracle error are:
Option #1
Rewrite your ALTER TABLE command to create a column with a unique name. Each column name must be unique within a table.
For example, if you had a table called suppliers defined as follows:
CREATE TABLE suppliers ( supplier_id number not null, supplier_name varchar2(50) not null, city varchar2(30), state varchar2(2), zip_code varchar2(10) );
And you executed the following ALTER TABLE command:
ALTER TABLE suppliers ADD supplier_name varchar2(50);
You would receive the following error message:
The column called supplier_name already exists. Each column name in your table must be unique.
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