How Can I Select All Columns Plus Additional Ones in Oracle?

Selecting All Columns, Including Additional Ones

Oracle allows you to seamlessly incorporate row numbers into your result set. However, specifying each column manually can be tedious. Instead, you can employ a more convenient method to retrieve all columns while also appending additional columns, such as row numbers.

Solution

To accomplish this, simply qualify the asterisk (*) with the name of the table from which you're selecting data. This technique allows you to retrieve all columns from the table plus any additional columns you add to the SELECT statement. For instance, to retrieve all columns along with row numbers, you can use the following query:

select rownum, table.* from table

This query will return both the row number and all columns from the 'table' table. The updated result set will resemble the following:

<b>rownum</b>       <b>column1</b>       <b>column2</b>       <b>column3</b>       <b>column4</b>
1            Joe           Smith         1             2
2            Bob           Jones         3             4

By qualifying the *, you can easily retrieve all existing columns while simultaneously adding additional columns to your result set, enhancing the flexibility and efficiency of your Oracle queries.

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