Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-tis!ames!mailrus!nrl-cmf!ukma!psuvm.bitnet!uh2
From: UH2@PSUVM.BITNET (Lee Sailer)
Newsgroups: comp.databases
Subject: SQL question
Message-ID: <34358UH2@PSUVM>
Date: 23 Feb 88 14:32:18 GMT
Organization: Penn Sate Erie--School of Business
Lines: 4

I've only read about SQL, and have never had to write a query in it.
This morning I am wondering, how do you do a simple relational
UNION in SQL?  That is, given two relations, R1 and R2, how do
you create R3 that contains those tuples that are in either R1, R2, or
both, assuming that R1 and R2 have the same attributes?