Selasa, 08 November 2016

Re: [MS_AccessPros] Query not responding

 

still returning whole numbers.
 
I am fairly sure the figures I am getting are the counts themselves but they are not being divided by gtot for some reason?



From: "John Viescas JohnV@msn.com [MS_Access_Professionals]" <MS_Access_Professionals@yahoogroups.com>
To: "MS_Access_Professionals@yahoogroups.com" <MS_Access_Professionals@yahoogroups.com>
Sent: Tuesday, 8 November 2016, 17:48
Subject: Re: [MS_AccessPros] Query not responding

 
Phil-

Try wrapping a CDbl around either part of the expression, as in:

SUM(qryZero.Count0) / CDbl(totg) As 0

John Viescas, author
Effective SQL
SQL Queries for Mere Mortals
Microsoft Office Access 2010 Inside Out
Microsoft Office Access 2007 Inside Out
Building Access Applications

On Nov 8, 2016, at 16:45, Phil Knowles pdk444444@yahoo.co.uk [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com> wrote:

Hi John
 
something not quite right in the calculations where I am dividing by totg - they are all coming out as integers whereas they should all come out with values between 0 and 1
typically totg represents the total games in a season for the specified ref and count0 is always a subset of those same games
 
any ideas?
 
Phil
 



From: "John Viescas JohnV@msn.com [MS_Access_Professionals]" <MS_Access_Professionals@yahoogroups.com>
To: "MS_Access_Professionals@yahoogroups.com" <MS_Access_Professionals@yahoogroups.com>
Sent: Monday, 7 November 2016, 15:53
Subject: Re: [MS_AccessPros] Query not responding

 
Phil-

I would pull out each of the DCounts into separate queries.  For example, convert:

DCount("id","matches for grid - league","[totbooks]=0 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg]

into:

qryZero:
SELECT MGL.Season, COUNT(id) As Count0
FROM [matches for grid - league] AS MGL
WHERE [totbooks]=0 AND [refid]= [forms]![live games]![referee] and month([date])<>5
GROUP BY Season;

Then incorporate it back into your main query using an INNER JOIN:

SELECT [Matches for grid - league].Season, Count([Matches for grid - league].id) AS totg, Avg([Matches for grid - league].totbooks) AS avbk, SUM(qryZero.Count0) / totg As 0
FROM [Matches for grid - league] INNER JOIN qryZero ON [Matches for grid - league].Season = qryZero.Season
WHERE (((Month([date]))<>5) AND (([Matches for grid - league].Refid)=[forms]![Live Games]![referee]))
GROUP BY [Matches for grid - league].Season
ORDER BY [Matches for grid - league].Season DESC;

I threw the SUM in there to make sure you don't get a bogus error because Count0 isn't in the GROUP BY - it should be a SUM of exactly one row!  "Simply" do that for each of your DCOUNTs - building up a complex INNER JOIN.

John Viescas, Author
Effective SQL
SQL Queries for Mere Mortals 
Microsoft Access 2010 Inside Out
Microsoft Access 2007 Inside Out
Microsoft Access 2003 Inside Out
Building Microsoft Access Applications 
(Paris, France)




On Nov 7, 2016, at 4:29 PM, Phil Knowles pdk444444@yahoo.co.uk [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com> wrote:



Here goes - good luck!
 
SELECT [Matches for grid - league].Season, Count([Matches for grid - league].id) AS totg, Avg([Matches for grid - league].totbooks) AS avbk, DCount("id","matches for grid - league","[totbooks]=0 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS 0, DCount("id","matches for grid - league","[totbooks]<11 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-10], DCount("id","matches for grid - league","[totbooks]<21 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-20], DCount("id","matches for grid - league","[totbooks]<31 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-30], DCount("id","matches for grid - league","[totbooks]<41 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-40], DCount("id","matches for grid - league","[totbooks]<51 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-50], DCount("id","matches for grid - league","[totbooks]<61 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-60], DCount("id","matches for grid - league","[totbooks]<66 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-65], DCount("id","matches for grid - league","[totbooks]<71 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [0-70], DCount("id","matches for grid - league","[totbooks] between 30 and 40 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [30-40], DCount("id","matches for grid - league","[totbooks] between 40 and 60 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [40-60], DCount("id","matches for grid - league","[sendingsoff]>0 and [refid]= [forms]![live games]![referee] and [season] = '" & [season] & "' and month([date])<>5 ")/[totg] AS [reds%]
FROM [Matches for grid - league]
WHERE (((Month([date]))<>5) AND (([Matches for grid - league].Refid)=[forms]![Live Games]![referee]))
GROUP BY [Matches for grid - league].Season
ORDER BY [Matches for grid - league].Season DESC;
before my last change I had it working on the table 'matches' but I need it to analyse a particular type of match (ie league matches) so I changed it to run on a query which selects just the league matches.
 
there are about 60000 matches and maybe 45000 league matches.
 
cheers
 
Phil


On Monday, 7 November 2016, 15:21, "John Viescas JohnV@msn.com [MS_Access_Professionals]" <MS_Access_Professionals@yahoogroups.com> wrote:


Phil-

If a query is "too big", you should get a "query too complex" error.  If it's taking a long time to run, perhaps it could be optimized.  What's the SQL of the query?

John Viescas, Author
Effective SQL
SQL Queries for Mere Mortals 
Microsoft Access 2010 Inside Out
Microsoft Access 2007 Inside Out
Microsoft Access 2003 Inside Out
Building Microsoft Access Applications 
(Paris, France)




On Nov 7, 2016, at 4:14 PM, Phil Knowles pdk444444@yahoo.co.uk [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com> wrote:



Hi John
 
That looks as if it might be where the issue lies - I will look into it and let you know 
 
many thanks for that.
 
Another one for you whilst I have you if you don't mind.
 
I have a query which causes the message 'Access is not responding' - it is quite a complex query in that it has about 12 fields which use fairly involved dcounts.
 
Is it possible that a query simply becomes too 'big' to run? 
 
cheers
 
Phil












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