I've just started using microsoft access so I don't really know how to solve this. I would like to use an update query to add a value from a form to a value on a table.
I originally used the SUM expression which gave me an error saying it was an aggregate function.
I also tried to add the two values together (e.g [field1] + [field2]) which as a result gave me a value with both numbers together instead of adding them together.
The following is the SQL I'm using:
UPDATE Votes
SET Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE (((Votes.ActID) = [Forms]![frmVote]![combacts])
AND ((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
I want to add a value [txtnumvotes] a form to a field [NumVotes] from the table [Votes].
Could someone please help me?
You can specify the expected data type with parameters:
PARAMETERS
[Forms]![frmVote]![txtnumvotes] Short,
[Forms]![frmVote]![combacts] Long,
[Forms]![frmVote]![combrndnum] Long;
UPDATE
Votes
SET
Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE
(((Votes.ActID) = [Forms]![frmVote]![combacts])
AND
((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
Without the specification, Access has to guess, and that sometimes fails.
Related
So I'm having trouble understanding on how to change the date on an update in postgres. What I have currently, that is giving a syntax error is
UPDATE works_locations SET (wrl_startdate = '2014-09-07', wrl_enddate = '2015-02-06')
with a few statements determining which field I should specifically change. However, postgres is giving me an error. How do I successfully change the date in postgres, even if the start date is around two years prior to this entry?
I don't have Postgres installed so I can't test this but try removing the parenthesis on your SET clause so that it looks like this:
UPDATE works_locations SET wrl_startdate = '2014-09-07', wrl_enddate = '2015-02-06'
As the official documentation does not say how to do a simply "num_rows" with their system, i need some help here: How to get the amount of rows in the result set ?
Assuming:
$connection=Yii::app()->db;
$command=$connection->createCommand($sql);
This will work for insert, update and delete:
$rowCount=$command->execute();
execute(): performs a non-query SQL statement, such as INSERT, UPDATE and DELETE. If successful, it returns the number of rows that are affected by the execution.
For select, you could do the following:
$dataReader=$command->query();
This generates the CDbDataReader instance and CDbDataReader provides a rowCount property
http://www.yiiframework.com/doc/api/1.1/CDbDataReader#rowCount-detail
$rowCount = $dataReader->rowCount;
About rowCount => Returns the number of rows in the result set. Note, most DBMS may not give a meaningful count. In this case, use "SELECT COUNT(*) FROM tableName" to obtain the number of rows.
ActiveRecord has count method which can be used.
$cntCriteria = new CDbCriteria();
$cntCriteria->condition = "categoryId = :categoryId";
$cntCriteria->params[':categoryId'] = $categoryRow->categoryId;
$articleCount = Article::model()->count($cntCriteria);
There is one more way to do this. When we execute a sql query it will return the result as array only. So we can able get the count of the rows using count() function like below.
$output=User::model()->findAllBySql("select * from user");//User is a model belongs to the user table
$count_val=count($output);//$count_val has the value of number of rows in the output.
First of all, I know there are already questions and answers about it, this thread being the one that is closest to what I need:
SQL Update to the SUM of its joined values
However, I get a syntax error (operator missing) that seems to occur close to the FROM clause. However I can't see it. Does it not like the FROM itself ? I am not used to using FROM in an update statement but it seems like it's valid from the QA I just linked :|
Any idea why there would be a syntax error there ?
I am using Access 2007 SP3.
Edit:
Wow, I forgot to post the query...
UPDATE r
SET
r.tempsmoy_requete_min = tmm.moy_mob_requete
FROM
rapports AS r INNER JOIN
(SELECT
id_fichier,
Round(Sum(temps_requete_min)/3,0) As moy_mob_requete,
Round(Sum(temps_analyse_min)/3,0) As moy_mob_analyse,
Round(Sum(temps_maj_min)/3,0) As moy_mob_maj,
Round(Sum(temps_rap_min)/3,0) As moy_mob_rap,
Round(Sum(temps_ddc_min)/3,0) As moy_mob_ddc
FROM maintenances
WHERE
periode In (10,9,8) And
annee=2011
GROUP BY id_fichier) AS tmm ON rapports.id_rapport = tmm.id_fichier
WHERE
1=0
The WHERE 1=0 part is because I want to test further the subquery before running it.
Edit: This is some simpler query I am trying. I get a different error this time. It now tells me that tempsmoy_requete_min (and probably all other left operands) are not part of an aggregate function... which is the point of my query. Any idea ?
UPDATE
rapports INNER JOIN maintenances ON rapports.id_rapport = maintenances.id_fichier
SET
rapports.tempsmoy_requete_min = Round(Sum(temps_requete_min)/3,0),
rapports.tempsmoy_analyse_min = Round(Sum(temps_analyse_min)/3,0),
rapports.tempsmoy_maj_min = Round(Sum(temps_maj_min)/3,0),
rapports.tempsmoy_rap_min = Round(Sum(temps_rap_min)/3,0),
rapports.tempsmoy_ddc_min = Round(Sum(temps_ddc_min)/3,0)
WHERE
maintenances.periode In (10,9,8) And
maintenances.annee=2011 AND
1=0
I tried adapting your first query sample, and was able to make your error go away. However then I encountered a different error ('Operation must use an updateable query').
It may be possible to overcome that error, too. However, I found it easier to use a domain function instead of a join to retrieve the replacement value.
UPDATE rapports
SET tempsmoy_requete_min = Round(DSum("temps_requete_min",
"maintenances",
"periode In (10,9,8) AND annee=2011 "
& "AND id_fichier='" & id_rapport
& "'")/3, 0);
If this suggestion works for tempsmoy_requete_min with your data, you will have to extend it to the other fields you want to replace. That won't be pretty. You could make it less ugly with a saved query which you then use as the "Domain" parameter for DSum() ... that could allow you to use a simpler "Criteria" parameter.
UPDATE r
should be
UPDATE rapports
You can't reliably use an alias in the update target.
I wanted to know how we could store the result of my select query on a variable.
#ppt2 = Ppt.select('slide_name').where('id=?',4)
#ppt1 = Ppt.update_all({:time2=>#ppt2},['id like ?','1'])
Here, slide_name and time2 are both text attributes of the same table ppt.
What happens on the above execution is that the time2 field in id=1 gets the value "#ppt2" whereas I want it to get the value of slide_name from id=4 which does not get stored in #ppt1.
In other words, how do I store the value of the select query in #ppt2 so that it can be used in the next line?
Any help is appreciated.
Call the slide_name method on your first result.
#ppt2 = Ppt.select('slide_name').find(4).slide_name
SQL query in Ms-Access
INSERT INTO tblTmpEventLog( TrackingNumber, PartNumber, PartNumberChgLvl,
EnteredBy, EventTypeSelected, EventDate )
SELECT DISTINCT tblRevRelLog_Detail.RevRelTrackingNumber,
tblRevRelLog_Detail.PartNumber, tblRevRelLog_Detail.ChangeLevel,
[Forms]![frmEventLog_Input]![EnteredBy] AS EnteredBy,
[Forms]![frmEventLog_Input]![EventTypeSelected] AS EventTypeSelected,
CDate([Forms]![frmEventLog_Input]![EventDate]) AS EventDate
FROM tblRevRelLog_Detail LEFT JOIN tblEventLog
ON (tblEventLog.PartNumber = tblRevRelLog_Detail.PartNumber)
AND (tblEventLog.PartNumberChgLvl = tblRevRelLog_Detail.ChangeLevel)
WHERE ((([tblRevRelLog_Detail]![RevRelTrackingNumber]) =
[Forms]![frmEventLog_Input]![TrackingNumber]))
AND ((tblEventLog.PartNumber) NOT IN
(SELECT tblEventLog.PartNumber FROM tblEventLog
WHERE tblEventLog.EventTypeSelected = 'pn REMOVED From Wrapper'
AND tblEventLog.TrackingNumber =
tblRevRelLog_Detail.RevRelTrackingNumber
AND tblEventLog.PartNumber = tblRevRelLog_Detail.PartNumber
AND tblEventLog.PartNumberChgLvl =
tblRevRelLog_Detail.ChangeLevel
));
DISTINCT keyword for EnteredBy, EventTypeSelected is not working..I mean, data for these columns is not displaying when I use DISTINCT keyword.
EVENTDATE is working fine, but I do not understand why is it not displaying for EneteredBy and EventTypeSelected columns.
Can anyone tell me how to handle this?
It may be that the query can't interpret properly from the form directly as the final data type. However in your date field, you are wrapping it in a function CDATE( ... ). So, the SQL engine knows the result type. I would suggest doing the same for the other fields. Ex: doing a CAST ( ...your form control... as DateTime ) as OtherColumn, etc... I THINK Access allows casting, but not positive. Otherwise, pre-pull the form value into a declared data type variable and use THAT variable in the query AS OtherColumn as you are doing.
Additionally to what #Jack mentioned, you can always go back to your account, look at your historical question, and click on whatever answers actually helped / solve your problems. Some questions never do get answers and that's ok, just give credit to those that DO help.
I have found in the past (I don't remember which old version of Access this was) that if you set the value of a form control in VBA, and then use that control in a query, the query will not see the value you set in VBA. If the user edits the control normally, the query sees the expected value. Perhaps that's what happened here.
To work around that, you can declare a VBA function that returns the desired value. For example, instead of this:
SELECT ..., Forms!MainForm!TextEntry AS TextEntry, ... FROM ...
use this:
SELECT ..., GetTextEntry() AS TextEntry, ... FROM ...
along with this:
Public Function TextEntry() As Variant
TextEntry = Forms!MainForm!TextEntry
End Function