Database Reference
In-Depth Information
Summary
This chapter was aimed at helping you grasp the versatility of PostgreSQL for
procedural languages in general and PL/pgSQL in particular. You can now write
programs as well as simple SQL queries by learning PL/pgSQL's conceptual
elements, declarations, writing functions, control structures, and error handling.
You have also briely explored interfacing with other native languages, namely PL/
Python, PL/Perl, and PL/Tcl.
The next chapter will be about indexes, explaining its usage and importance in
databases. Let's keep rolling!
