Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins PostgreSQL is an open-source, object-relational (also called ...

Edit the SQL code as follows. For a complete explanation of commands for using the Enhanced Editor, refer to the window's online help. Add a WHERE clause ( WHERE A.FLIGHT=B.FLIGHT) at the end of the ...

Specifies the current catalog name. To change it, type a two-level name or ? to list all possible catalogs. Then make a selection from the resulting Select a Member window. Displays the number of ...