Question

Need some query help, having multiple outputs when I only need 1

Asked by: jag5311

Let me see if I can straighten out that subject.

Here is my query so far

<cfquery name="games" datasource="#dsn#">
SELECT games.gamename, articles.gameID
FROM games INNER JOIN articles ON games.gameID=articles.gameID
WHERE articles.gameID>0 AND articles.typeID=1
</cfquery>

what that is saying is I want the gamename and gameID   where the gameID's from two tables match.  I also want what is outputted to make sure the gameID is greater then 0 and the articles typeID equals 1 (which is a cheat).

WHat is happening though, is that a game may very well have more then 1 cheat, so if gameID of 5  has multiple typeID=1, like this

gameID -------------typeID

5         ----------------1
5        -----------------1

etc..,

for an example, visit this link, http://www.gamecubecheats.info/gamecube-cheats.cfm

Notice the two NBA LIve 2003's.  Currently in my database, there are two cheat articles associated with that game, so my query is currently working, its just that I only want the game to be shown once even if there are multiple cheats.

Make sense?

Thanks
Bryan

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Asked On
2003-12-21 at 07:52:39ID20831742
Topic

MySQL Server

Participating Experts
1
Points
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Comments
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Answers

 

by: JakobAPosted on 2003-12-21 at 09:16:51ID: 9981541

<cfquery name="games" datasource="#dsn#">
SELECT games.gamename, articles.gameID
FROM games INNER JOIN articles ON games.gameID=articles.gameID
WHERE articles.gameID>0 AND articles.typeID=1
GROUP BY articles.gameID
</cfquery>

regards JakobA

 

by: jag5311Posted on 2003-12-21 at 09:31:37ID: 9981583

Thanks.

I also just found out that I could use in my <cfoutput query="blah" group="gamename"> to do the same thing

Curious though, in  your example, is there any way in the GROUP BY part where it could group a list of games by their first letter in the gamename?

See, I have thought about adding a group section to my game details and just provide it with a letter, then on the games page, I can group it by the group letter I provided, however, if I am able to do it strictly with the name already, that would be cool to.

Problem is, I need it to be like this

A
games starting with A

B
games starting with B

etc...

What would be my best plan of attack on that?

 

by: JakobAPosted on 2003-12-21 at 09:45:26ID: 9981615

That sounds more like an  ORDER BY clause

ORDER BY games.gamename ASC            -- must be placed below the GROUP BY line

That will give you the names in alphabetical order. but it will NOT group them.
From the mysql point-of-view GROUP have the very specific meaning of collating several rows into a single row. It can be done only when all the fields in the 'group' contain the same data in all the rows.

That holds true in the original problem. But the "group by first letter in name" you want cannot be done by mySQL. because the second, third, etc. letters are not the same.

So you must do that grouping yourself. The  ORDER BY  helps with that, because it gives you all the 'starting with 'A' games' together, then all the 'starting with 'B' games', etc. So you just need to insert at "These are the 'A'/'B'/'C'/... games" each time the letter changes.

regards JakobA

 

by: jag5311Posted on 2003-12-21 at 10:08:20ID: 9981692

you said

" So you just need to insert at "These are the 'A'/'B'/'C'/... games" each time the letter changes.
"

So are you saying that I need to create a table in my database that is NAME=groupname...

Fields:  groupnameID
           groupletter

then in my games table, have a groupname column with the appropriate ID?

Or are you saying that I can just have

<dl>
<dt>A</dt>
<dd>#gamename#</dd>
</dl>

??  To me, that wouldn't seem to work

Thanks
Bryan

 

by: JakobAPosted on 2003-12-21 at 10:21:01ID: 9981729

You could do that.
but the only thing you could extract from that table would be the letter itself, not the full name.

example:
table groups >>
fields:  groupId      groupname           groupletter
row:              1      "Abba"                 "A"
row:              2      "Anteaters"           "A"
row:              3      "Backstreet boys"   "B"
row:              4      "Beatles"               "B"

With that table you CAN say
    SELECT groupletter FROM groups GROUP BY groupletter
that will give 2 rows:      "A"    and    "B"

With that table you CANNOT say
    SELECT groupletter, groupname FROM groups GROUP BY groupletter
because  "Abba" and "Anteaters" are different datavalues. thet cannot be squeezed into one row.

regards JakobA

 

by: jag5311Posted on 2003-12-21 at 10:34:00ID: 9981764

Thanks

I appreciate it

20120131-EE-VQP-002

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