I've just started using MS Access this month and I have a very odd bug. I'm trying to create a query that searches for records in a table that have a maxBenefit (a dsum from a different table's field, with a one to many relationship) within a certain range. I'm using the DSUM function to get the maxBenefit because the table has a dailyBenefits field that need to be added together.
Here is my function:
maxBenefitOfQuote: Nz(DSum("[wholeYearBenefit]","tblDisabilityQuoteDailyBenefits",
"[quoteID] = " & [tblDisabilityQuotes].[ID]))
I know the function works because it produces the correct values. The query also takes in two parameters from a form to create a range for maxBenefits.
I limit the results with this criteria:
>=[Forms]![frmDisabilityFindSimilarQuotes]![minBenefitTotal] And
<=[Forms]![frmDisabilityFindSimilarQuotes]![maxBenefitTotal]
The problem is I get very odd results from the query with maxBenefits outside the range or not returning records with maxBenefits inside the range. If I set the minBenefitTotal to 0 and the max BenefitTotal to 100000000 I get no records returned from the query. If I set the minBenefitTotal to 0 and the maxBenefitTotal to 999999999 I get all the proper records.
Any ideas why this is happening? Thanks in advanced.
First,
Try wrapping both of your inputs in a call to CCur:
>=CCur([Forms]![frmDisabilityFindSimilarQuotes]![minBenefitTotal]) And
<=CCur([Forms]![frmDisabilityFindSimilarQuotes]![maxBenefitTotal])
Next,
If you omit the actual form inputs, and hard-code numbers into the criteria, does it work?
For Example: (>= 0 and <= 100000000)
If that worked... It feels like a string -> number conversion issue. Make sure all string input is actually a number (via CCur()) before sending it into the query.
Related
I'm new to Access and I'm building a database here at work to log all production that was done. I was able to make a query form with criteria between a date range, condition, part number and work order. Using a code in the expression builder, these are what is placed in the criterion:
Date range: Between [Forms]![Form Query]![BeginDate] And [Forms]![Form Query]![EndDate]
Part number: Like (IIf(IsNull([Forms]![Form Query]![Part Number]),"*",[Forms]![Form Query]![Part Number]))
Condition: Like (IIf(IsNull([Forms]![Form Query]![Condition]),"*",[Forms]![Form Query]![Condition]))
This is where even when part numbers and condition is empty, the query will display all records. My problem is the date range if I leave it empty (say, I simply wanted to query all of the records), it will return with zero value. I wanted it to make it simple for the user that if I leave the date range empty, it will still show all of the records. I had to temporarily put the date range as required to always return results.
Query form
Query Criteria
All input is appreciated! Thank you so much!
Provide alternate value if date is not input:
Between Nz([Forms]![Form Query]![BeginDate], #1/1/1900#) And Nz([Forms]![Form Query]![EndDate], #12/31/2200#)
For text fields, assuming value is unique and is never part of a longer string, LIKE criteria can just concatenate wildcard:
LIKE [Forms]![Form Query]![Part Number]) & "*"
I have a query that returns some dates which are not in any order. I need to select the last row from the sub query. The problem is all the solutions I can find online uses something like
ORDER BY qry_doc_dates.arrival_date DESC LIMIT 1
Select qry_doc_dates.arrival_date
FROM (qry_doc_date) AS qry_doc_dates
ORDER BY qry_doc_dates.arrival_date DESC
LIMIT 1
which will not serve my purpose because it first orders the dates as DESC(or ASC).
Suppose the qry_doc_date returns :
"2019-05-27",
"2019-05-13",
"2019-05-20",
"2019-05-22",
"2019-07-12",
"2019-05-22",
"2019-07-16",
"2019-05-22"
As we can see that the returned values are not in order. If I use
ORDER BY qry_doc_dates.arrival_date DESC LIMIT 1
then it returns "2019-07-16" But I need "2019-05-22" which is the last row.
EDIT 1:
I am trying to convert this VBA query to MYSQL.
DLast("arrival_date", "qry_doc_date", "[package_id] = " & Me!lstPackage)
I suppose I misunderstood what the VBA query wants to return. Another issue is I do not have means to run this VBA query and check the result myself.
Your question doesn't make too much sense according to the SQL standard. In the absense of an ORDER BY clause the database engine is free to return the rows in any order. This order may even change over time.
So essentially you are requesting the "last random row" the query returns. If this is the case, why don't you get the "first random row"? It doesn't make any difference, does it?
The only way of getting the last random row is to get them all and discard all of them except for the last one.
Now, if you just need one random row, I would suggest you just get the first random row, and problem solved.
In response to the additional information from your edit:
EDIT 1: I am trying to convert this VBA query to MYSQL.
DLast("arrival_date", "qry_doc_date", "[package_id] = " & Me!lstPackage)
I suppose I misunderstood what the VBA query wants to return. Another
issue is I do not have means to run this VBA query and check the
result myself.
Unless your dataset qry_doc_date is ordered by means of an order by clause, the DFirst or DLast domain aggregate functions will return essentially a random record.
This is stated in the MS Access Documentation for these two functions:
You can use the DFirst and DLast functions to return a random record from a particular field in a table or query when you simply need any value from that field.
[ ... ]
If you want to return the first or last record in a set of records (a domain), you should create a query sorted as either ascending or descending and set the TopValues property to 1. For more information, see the TopValues property topic. From a Visual Basic for Applications (VBA) module, you can also create an ADO Recordset object and use the MoveFirst or MoveLast method to return the first or last record in a set of records.
What you need is to in qry_doc_date to include a sequential row number.
Then you can use something like this:
ORDER BY qry_doc_dates.row_number DESC LIMIT 1
I'm trying to make a query using a calculation with Date().
I have a field named [Currentordue] and a field named [duedate]. What I'm trying to accomplish is making a query to limit the results by "if [currentordue] equals "due" or if [duedate] minus today's date is less than 30 days."
I've tried a few different ways but always seem to end with either an error or with no results showing (which would be an error as well since I know there are fields that are due).
Any and all help would be appreciated.
Here is a way to use two different date conditions:
SELECT Table1.Currentordue, Table1.duedate, DateDiff("d",[duedate],Date()) AS Expr1
FROM Table1
WHERE (((DateDiff("d",[duedate],Date()))<30)) OR (((Table1.Currentordue)=[duedate]));
I'm trying to pull some data from a query in my database into a calculated field in a table. I have dates entered for some jobs I'm recording (DateCallOpened, DateQuoteSent, DateQuoteReceived), as well as WorkType for each job to track the type of work done. I've used calculated fields to find the time it took for each record between those dates. I've also used qryTimings to find the average length of time for the WorkType.
I'd like to build fields that showed the ProjectedQuoteSent, and use the data from my query to calculate the date I can expect the quote to be sent, but I just can't figure out how to pull that data out of the query. I was hoping it would be something as simple as:
=[DateCallOpened]+[qryTimings]:[Avg Of TimeToSendQuote]
You can use a DLookup() function to grab your value from your query. So your formula would be something like:
=[DateCallOpened]+DLookup("Avg Of TimeToSendQuote", "qryTimings", _
"[WorkType]=" & [Forms]![frmMyForm]![txtWorkTypeInput])
See this for more info.
In SSRS, I'm trying to calculate the average number of months a client used a program. The programID is the parameter for the whole report. I'm trying to achieve this (not written with real syntax):
=Avg(Fields!length_of_stay.Value, 0))/30.0 WHERE programid = #ProgramID
Using this question, I came up the the following code which is producing an incorrect answer. I tested in SSMS to get the actual values to compare to SSRS results.
=Avg(IIF(Fields!programid.Value = Parameters!ProgramID.Value, Fields!Length_of_Stay.Value, 0))/30.0
The "/30" is used since the value is in days and I need months. I think the issue is using the parameter value chosen; this is my first report trying to calculate expressions with parameters.
Avg returns the average of all non-null numeric values. 0 is not null so it gets included in the average, distorting your result for every row with a different PragramId. Try using Nothing instead:
=Avg(IIF(Fields!programid.Value = Parameters!ProgramID.Value, Fields!Length_of_Stay.Value, Nothing))/30.0