postgres

History

Tom Lane 0dbffa704a First cut at making useful selectivity estimates for range queries (ie, WHERE x > lowbound AND x < highbound). It's not very bright yet but it does something useful. Also, rename intltsel/intgtsel to scalarltsel/scalargtsel to reflect usage better. Extend convert_to_scalar to do something a little bit useful with string data types. Still need to make it do something with date/time datatypes, but I'll wait for Thomas's datetime unification dust to settle first. Eventually the routine ought not have any type-specific knowledge at all; it ought to be calling a type-dependent routine found via a pg_type column; but that's a task for another day.		26 years ago
..
Makefile	From: Darren King <darrenk@insightdist.com>	28 years ago
README	From: Darren King <darrenk@insightdist.com>	28 years ago
advanced.source	Rename tuturials for char2/char16 removal.	27 years ago
basics.source	Rename example temp to mytemp.	27 years ago
beard.c	Change my-function-name-- to my_function_name, and optimizer renames.	27 years ago
complex.c	Move some system includes into c.h, and remove duplicates.	27 years ago
complex.source	First cut at making useful selectivity estimates for range queries	26 years ago
funcs.c	Move some system includes into c.h, and remove duplicates.	27 years ago
funcs.source	Fixup for src/tutorial/func.c and src/tutorial/func.source	27 years ago
syscat.source	Fix spelling of "including	28 years ago

README

This directory contains SQL tutorial scripts.  To look at them, first do a
	% make
to compile all the scripts and C files for the user-defined functions
and types.  (make needs to be GNU make and may be named something
different on your system)

Then, run psql with the -s flag:
	% psql -s

Welcome to the POSTGRESQL interactive sql monitor:
  Please read the file COPYRIGHT for copyright terms of POSTGRESQL

   type \? for help on slash commands
   type \q to quit
   type \g or terminate with semicolon to execute query
 You are currently connected to the database: jolly

jolly==>

From within psql, you can try each individual script file by using
the \i <filename> psql command.