The creation of multiple bitmapped indexes provides a very powerful method for rapidly answering difficult SQL queries. For example, assume there is a motor vehicle database with numerous low ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. Skip to content TechRepublic ...

Type a SELECT statement to get information from your Oracle database, as in the following example:select name, address, city, state, zip_code from customers;In this command line, Oracle lists ...

In this example, the PRESERVE_COMMENTS argument is specified after the USER= and PASSWORD= arguments. The ORACLE SQL query is enclosed in required parentheses. The SQL INDX command identifies the ...