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In addition to renaming tables and indexes Oracle9i Release 2 allows the renaming of columns and constraints on tables. In this example once the the TEST1 table is created it is renamed along with it's columns, primary key constraint and the index that supports the primary key.
This Oracle tutorial explains how to use the Oracle ALTER TABLE statement to add a column, modify a column, drop a column, rename a column or rename a table (with syntax, examples and practice exercises).
Oracle creates (or hijacks) an index in all cases to maintain primary key and unique constraints. Otherwise, how else could you do it?
What is the most acceptable naming convention for constraints. For example if empno is the primary key for emp table, I generally name the constraint as pk_emp_empno.
(3) You can rename the column if you have the procedure, views on that tabl e, and column. But after the rename, these objects will become invalid and you have to modify the view and package to compile it.
In this tutorial, you'll learn how to rename a column in Oracle using the ALTER TABLE RENAME COLUMN statement.
You have to use rename column statement along with alter table statement The RENAME COLUMN statement allows us to rename an existing column in an existing table in any schema (except the schema SYS).
This article demonstrates how to rename column in an Oracle table. It also provides a workaround to rename a table column in older versions of Oracle that do not support the RENAME command.
Renaming columns in a database table is a common task that database administrators perform. In this blog post, we will learn how to rename a column in an Oracle database.
Oracle usually creates an unique index with the same name my_pk. In such a case you can drop the unique index or rename it based on whether the constraint is still relevant.