Column rename in oracle 8i software

I have a materialized view with an unknown column name, and i need to give that column a name. The column rename clause is the oracle 9i syntax that facility is not available in oracle 8i. Includes adding new columns, altering existing column, renaming columns, and dropping columns. In this example once the the test1 table is created it is renamed along with its columns, primary key constraint and the index that supports the primary key. To rename a table, you must either be the database owner or. In oracle select syntax, there is currently no way to assign column aliases to multiple columns based on some expression. In oracle9ir2, oracle provides alter table syntax to rename data columns inplace in this form. Use the rename column clause of the alter table statement to. Oracle database lets you rename existing columns in a table.

Back in the early days of oracle7 it was a very cumbersome procedure to rename a column within a table, and some brave dbas would go into the data dictionary and rename the column directly. Address the column naming scheme youd need to use alter table statements like. Here is a column rename procedure that works with some success in oracle7 and 8. The alter command is used to modify an existing database, table, view or other. Rename table column in 8i solutions experts exchange. If a domain index is defined on the column being renamed, then the database.

Rename table allows you to rename an existing table in any schema except the schema sys. If you trace a session where oracle does a column rename, youll see a bunch of recursive sql statements updating a bunch of data dictionary tables. The best way to do this in ver 7 8 is probably to rename the existing table. I need to form the equivalent of a union join in oracle 8i, even though a union join doesnt appear to be supported in 8i. In this mysql tutorial, we will learn alter, drop, rename, change keyword, modify keyword. I cant just recreate the view because it took a long time to create. This article gives a quick overview of applying changes to the database using liquibase. In 8i, you have to drop the column and recreate with new name.

Then recreate the table looking the way you want followed by inserting the data using an insert as select statement. You have to assign an alias to each individual column. Use the rename column statement to rename a column in a table. To minimize the impact on applications, you would simply. How to rename a column in a query in oracle stack overflow. Oracle database invalidates all objects that depend on the renamed object, such. The rename column statement allows you to rename an existing column in an existing table in any schema except the schema sys. There is no command to drop columns until oracle 8. Here are some examples of oracle alter table syntax to rename data columns.