Having trouble with a subquery

Question

0.00/5 (No votes)

See more:

I have 2 tables.

Table 1: Teams

TeamsId__|__TeamName__|_TeamAbv__|__TeamLogo__|
         |            |          |            |
   1     |    Eagles  |   PHI    | eagles.png |
_________|____________|__________|____________|
   2     |    Bills   |   BUF    | bills.png  |
_________|____________|__________|____________|

Continues for 32 teams

Table 2: Schedule

_GameId__|__HomeTeam__|_AwayTeam__|____Week____|
         |            |           |            |
   1     |    1       |     2     |   Week1    |
_________|____________|___________|____________|
   2     |    7       |    12     |   Week1    |
_________|____________|________ __|____________|


The HomeTeam and the AwayTeam numbers are the assigned TeamsId in the Teams Table

I would like to write a query that display the TeamName for each the Home and Away teams in a separate column in 1 table

What I have tried:

Would like to convert this code into 1 table 2 columns:

SELECT Teams.TeamName AS HomeTeam
FROM Teams
JOIN Schedule ON Teams.TeamsId = Schedule.HomeTeam

SELECT Teams.TeamName AS AwayTeam
FROM Teams
JOIN Schedule ON Teams.TeamsId = Schedule.AwayTeam

First Attempt: Error Conversion failed when converting the nvarchar value 'Eagles' to data type int.

SELECT Teams.TeamName AS HomeTeam, Teams.TeamName AS AwayTeam
FROM Teams
JOIN Schedule
ON Teams.TeamName = (SELECT Teams.TeamsId FROM Schedule WHERE Teams.TeamsId = Schedule.AwayTeam)
WHERE Teams.TeamsId = Schedule.HomeTeam

Posted 19-May-18 9:50am

Commish13

Updated 19-May-18 10:07am

Add a Solution

Comments

PIEBALDconsult 19-May-18 15:56pm

You don't need a subquery for that, but you'll need to JOIN to the team table twice.

RedDk 19-May-18 15:58pm

Perhaps the "things" being JOIN'd are of disparate types, yes?

(gambling is a vice)

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

PIEBALDconsult · Accepted Answer · 2018-05-19T10:08:00

Solution 1

Something like this?

SQL

SELECT ...
FROM Schedule Schd
INNER JOIN Teams Home
ON Schd.HomeTeam = Home.TeamsId
INNER JOIN Teams Away
ON Schd.AwayTeam = Away.TeamsId

Posted 19-May-18 10:08am

PIEBALDconsult

Comments

Commish13 19-May-18 16:56pm

Thank you, I don't know if you saw my other 2 comments before I deleted them but I figured it out. Thanks for the code it really helped.