Chapter 12. PL/Tcl – Tcl Procedural Language
Tools Command Language (Tcl), also commonly known as tickle, has been around for a long time. It was created by John Ousterhout in 1988 and got a lot of traction for rapid prototyping and scripted applications.
In this chapter, we will take a brief look at PL/Tcl. Between PL/Perl, PL/Python, and PL/pgSQL, you have very powerful languages available at your disposal that can do almost anything you need. For some other things, you have the option to write your functions in C. You might wonder why it is useful to discuss PL/Tcl. For a long time, in the early days of PostgreSQL, PL/Tclu (untrusted PL/Tcl) was the only way to do things outside PostgreSQL, such as interacting with the operating system. A lot ...
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