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 PostgreSQL language features are extensions to the standard.
In the examples that follow, we assume that you have created a
mydb, as described in
the previous chapter, and have been able to start psql.
Examples in this manual can also be found in the PostgreSQL source distribution in the
distributions of PostgreSQL
might not compile these files.) To use those files, first change
to that directory and run make:
This creates the scripts and compiles the C files containing user-defined functions and types. Then, to start the tutorial, do the following:
psql -s mydb
\i command reads in commands
from the specified file.
-s option puts you in single step
mode which pauses before sending each statement to the server.
The commands used in this section are in the file
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