This chapter provides an overview of how to use SQL to perform simple operations. This tutorial is only intended to give you an introduction and is in no way a complete tutorial on SQL. Numerous books have been written on SQL, including [melt93] and [date97]. You should be aware that some Postgres Pro language features are extensions to the standard.
In the examples that follow, we assume that you have created a database named
mydb, as described in the previous chapter, and have been able to start psql.