?
Solved

Referencing the same column from table aliases

Posted on 2004-03-31
1
Medium Priority
?
198 Views
Last Modified: 2008-03-06
These tables don't make a lot of sense, but they are for illustrative purposes only:

FactTable:
ID | Result
1     Dead
2     Alive
3     Open

RefTable
Name | FactID1 | FactID2
Jane     1             2
Bob      1             3

$query = "select Name, Res1.Result, Res2.Result from RefTable, FactTable Res1, FactTable Res2
               where RefTable.Fact1ID = Res1.ID and RefTable.Fact2ID = Res2.ID"

$res = mssql_query($query);
$n = mssql_num_rows($res);
if ($n)
{
   $a = mssql_fetch_array($res);
   $name = $a['Name'];
   // MY QUESTION: how do I reference Res1.Result and Res2.Result here? $a['Result'] won't work,
   // it's ambigous. Also fully qualified $a['Res1.Result'] does not work. What is the correct syntax?
}

Thanks!
0
Comment
Question by:RichardFox
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 12

Accepted Solution

by:
venkateshwarr earned 500 total points
ID: 10726758
> $query = "select Name, Res1.Result, Res2.Result from RefTable, FactTable
> Res1, FactTable Res2
>                where RefTable.Fact1ID = Res1.ID and RefTable.Fact2ID = Res2.ID"

query can be changed to...

$query = "select Name, Res1.Result as Result1, Res2.Result as Result2 from RefTable, FactTable Res1, FactTable Res2
               where RefTable.Fact1ID = Res1.ID and RefTable.Fact2ID = Res2.ID"


.
.
$val = $a['Result1']

Cheers!
venkat.
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article discusses four methods for overlaying images in a container on a web page
Many old projects have bad code, but the budget doesn't exist to rewrite the codebase. You can update this code to be safer by introducing contemporary input validation, sanitation, and safer database queries.
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
Suggested Courses

718 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question