Hi All,
I am wandering if it possible to check programatically whether a query returns a NULL result?
I am writing a program(VB) that involves an IFF statement where if there are records in the query it does a specific calculation & if there are no records returned in the query it does something else. Is this possible to achieve?
Thanks in advance:D
Cheers,
Karv
My issue surrounds retrieving the last (based on most recent date) set of records based on the most recent date. I have query, containing 2 tables as the sources for the query results. Currently, the query yields:
Field A Field B Field C
123456 AAAA 1/8/13
123456 BBBBI 1/8/13
123456 CCCC 1/8/13
123456 DDDD 1/8/13
123456 EEEEEE 3/10/13
123456 FFFFFF 3/10/13
123456 GGGG 3/10/13
123456 HHHH 3/28/13
123456 IIII 3/28/13
123456 JJJJ 3/28/13
The desired results would be to return all records with the last/max date, so yield:
123456 HHHH 3/28/13
123456 IIII 3/28/13
123456 JJJJ 3/28/13
I have tried the max & last functions, yet no success.
I'm trying to create a query to show me records for a given year. The issue I'm having is that each record has (4) dates fields and each record can contain null values.Is it possible to do this in a query with data like the example below?
Field 1 ID (1), Field 2 Date (12/22/2012), Field 3 Date (2/06/2013), Field 3 Date (Null), Field 4 Date (Null)
In this example I would want 2013 data but would need to be able to search any year. I could also have dates in all (4) fields
query to return the most recently created records in a composite key field, and only the most recent ones.
there is a screenshot of the composite key field attached
I want to get te records with the highest InvoiceID, there can be multiple records with the same InvoiceID and I want to get all of them.
Using the screenshot as an example I need to query to return the last two records as they both have the Same, highest InvoiceID.
I've got a database of club members with names, addresses, contact info etc.
I need to send letters by post to those members that I don't have email addresses for. How to create a query to return a list of people whom I don't have email addresses for.
I know how to mail merge the info with the letter I've written in word, how to group people who's email address cell is empty.
I understand that a query can accept wildcards in the search criteria but this is different.
I have a form on which a user selects a [product] part number in an unbound combo e.g. "12345-V111".
I then need a subform on the form to list records where the relevant field matches the left most part of this part number but is not necessarily complete. e.g. records with "12345-V1" would be returned, records with "12345-V2" wouldn't. The number of characters recorded in this field will vary, but if the characters that are entered match, then the record should be listed.
In other words, the record entries themselves need to be treated like wildcard entries.
Any way to build something into a sub-query that says 'if no records are found, return '0' or some other string'?
Otherwise is there a way to make a master query ignore sub-queries if they return no records?
Allow me to explain in more detail: I have a series of sub-queries, most of these take the sum of several fields from a number of different tables, and I have a main query which combines all of these, to be used as the basis of a summary report.
These queries aren't a problem, but I have a few other essential queries which take the modal (most common....) entry for fields which aren't numerical. So I can't use the sum function.
Now, if all the sub-queries are working then so does the main query, however if one of them fails to find a result, then none of them show up in the main query. I don't know why.
The issue is that depending on the date range selected, some of the tables targeted by the sub-queries don't have any records at all, so when they are run they return nothing. The sum queries can handle this since they just return 0, but those searching for modal records just find nothing (not 0's and not null fields, just blank across all rows).
Here's an example of my sql statement for the modal queries.
Code:
SELECT TOP 1 Trends.Trend AS ModeTboxTalk, "1" AS [Key]
FROM Trends INNER JOIN [Toolbox Talks] ON Trends.TrendID = [Toolbox Talks].TrendID
GROUP BY Trends.Trend, [Toolbox Talks].TrendID, [Toolbox Talks].TalkDate
HAVING ((([Toolbox Talks].TalkDate)<=[Forms]![WeeklyReportSelect]![WeekBox] And ([Toolbox Talks].TalkDate)>[Forms]![WeeklyReportSelect]![WeekBox]-7) AND (([Toolbox Talks].SiteID)=[Forms]![WeeklyReportSelect]![SiteBox]))
ORDER BY Count([Toolbox Talks].TrendID) DESC;
- FYI the weekly select form is where users select the week and site they want to report against. So it would be really peachy if I could tell the above to say something like 'no trend this week' if indeed there were no records.
I am trying to write an access SQL query that returns all records shared between table1 and table2 LESS THAN 3 TIMES.
application has 4 tables: Patients, AnnualPhysical, Doctors, and PatientPhysicalDoctors.
each patient has an annual physical (once a year), and chooses one doctor per annual physical.
each doctor can only perform three or less annual physicals per year.
It is a small application with less than 1000 records per table.
the query will allow the patient to choose an annual physical doctor once a year from available doctors.
Patients is one-to-many to AnnualPhysical;
AnnualPhysical is one-to-many to PatientPhysicalDoctors;
Doctors is one-to-many to PatientPhysicalDoctors.
query for all records NOT shared between Doctors and PatientPhysicalDoctors is:
SELECT *
FROM Doctors
WHERE NOT EXISTS( SELECT * FROM PatientPhysicalDoctors
WHERE Doctors.DoctorID = PatientPhysicalDoctors.DoctorIDFK );
I am trying to create a query that returns records whether a field has data or not...
There are three fields in question, SSN, DOB (this is a date field), POB (this is a foreign key representing a state in the query shows the actual state). Now unless the criterion is different then I just need the answer for one I can reproduce.
I would like to do this in the criteria box in the query.
The query pulls from one table, some of the employees in this table have the three fields populated some don't. I would like the query to return all employees...
I am trying to create a query pulling from several tables. I will use the example below to illustrate what I'd like to do.
I have a field called 'Acc_Num', one called 'Stat_Code', and a third called 'Cat_Code'.
Each 'Acc_Num' can have multiple records because there are multiple Stat_Code and Cat_Code values.
What I want to do is isolate just the Acc_Num records where Stat_Code = 1 and Cat_Code equals A1.
I also want to isolate the Acc_num records where the Stat_code = 1 and where Cat_code does not exist.
I have an existing query, created using the query wizard which works just fine - however, I would like to modify it to return only instances where there are 3 or more records appearing.
Essentially, its an employee history report for a particular action done by those employees, which returns all records between two dates as specified by the user. What I would like to do is only show those employees who have had more than three instances of this action in the given date period.
I am thinking along the lines of DCount? but how it would be phrased in the query?
I have a table with duplicate records (which is ok) and I want to return distinct data for each client.
It works fine when there is only two fields returned however, when I add a third field to the query it no longer returns only the Distinct records - I am getting Duplicates returned.
I.E
SELECT DISTINCT tblClient.ClientNo, tblClient.Name
FROM tblClient
Works fine with only the Distinct records for each client returned
However
SELECT DISTINCT tblClient.ClientNo, tblClient.Name, tblClient.Address, tblClient.OrderValue
FROM tblClient
Now returns Duplicates!
Is there a limit to the number of fields to be returned using DISTINCT or what else could be the problem? Should I be doing this some other way?
I have a table which includes a start date field and completion date field for housebuilding.
I am trying to extract all records that have either a started date or a completed date between 2 dates supplied by the user. I have tried to use Between on both fields but that doesn't return results between the fields.
It workd if I just do it on EITHER the start date field OR the completion date field so that implies to me that I need to break it into 2 queries, one returning start date recrods and the other returning completion date records but then I would need to have somthing that removes records that appear in both the start date and the completion date results.
I am looking for a query that will return records from a table that have related records in another table. Opposite to the Unmatched Query Wizard.I have two tables: tblSupplier and tblSupplierProducts.The two tables are related by the field "SupplierId".I need the query to only return Suppliers that have Products.
View 3 Replies View RelatedI'm looking to move an excel sheet to access because the row counts are too much.The main thing it does is compare the supplied data against a list I hold in the sheet.There are not duplicate records, however..Some data is a direct lookup for a full match, but much of it is a count to see how many records contain a certain string.
I have 500 keywords which have a countif function in using wildcards.I need to create a query/report which will return a list of records from the original list which contains each keyword featured and how many times it features.I was going to do it in PHPmysql but the time it took to parse a million records for every keyword made it pointless.
eg:
keywords:
look
billy
magic
list:
"have a look and see"
"spanish dave"
"who is billy brag"
"looky looky I go hooky"
"who's the man from argentina"
"could it be magic now"
my spreadsheet would return a 1 next to ""billy" and "magic" and would put a 2 next to "look".
the sheet has the keyword in each row and next to the column:
=COUNTIF(list,CONCATENATE("*@",B13))
where "list" is the external data.
I have a table that has entries recorded with date and time in one field, and I want to have a query that returns all records of a specified date or date range, regardless of the time in the field.
I have tried
Code:
Between [StartDate:] And [EndDate:]
And
Code:
Between [StartDate:] & "00:00" And [EndDate:] & "23:59"
Neither of which work ....
I have a database called LettersDatabase this databse holds all the letters that have been made including the path to the doc. I use SSN to ID the letters to customers on the Contacts Database.
Contacts database also uses the SSN to id the contacts
I have a form that creates new letters for customers in this form I have listbox that queries the LettersDatabase for all matching records based on the forms contact SSN to see how many letters have been made for that customer.
The problem is that my listbox only shows the first record matching that SSN but there are more records in that LettersDatabase with the same SSN that I need to have diplayed on the listbox as well.
I may be writing the query incorrectly.
Here what I have for the query on the listbox
Like[Forms]![LetterMaker]![txtSSN]
I try adding (&"*") to the end of the query but that does not help.
If anyone out there has the solution to this problem it would be greatly appreciated
Thank you
Hi.
i.e
I have a query with the following sort of information:-
MonthAmount
08/2007£100
09/2007£200
10/2007 £55
11/2007£60
As today being the 1st October, I would like the query to return the values for Oct and Nov.
The same values would be returned on the 31st Oct, but then the following day, only the Nov value would be returned...so, basically, it only returns the values of the current month and following months..
I am assuming I put something in the criteria of the query under the month? I have tried a number of things, with none working!!!
Thanks for reading....
Frank.
Hi all,
May I know some to construct any functions or query string that can track the no. of records that mean certain criteria in the run time.
Basically I want to track the records in a subform (in datasheet view). Should the no. of records is 0, then I can disallow user from saving it onto the table for better record keeping.
Thanks !!
I have a form that using a combo box to select specific record, sometimes we need to see all records, i would like if the combo box if left empty to return all records. I typed this expression but it returns no records when combo box is empty.
IIf([Forms]![FrmReports]![LoanOfficer]="IsNull","*",[Forms]![FrmReports]![LoanOfficer])
If i use this expression i get the wrong results when a Loan Officer ID is enterd;
LIke([Forms]![FrmReports]![LoanOfficer] & *
Example of wrong results, if Loan officer Id is 1, then it returns loan officers 1,11, 111
Thanks in advance for any help
Not sure if I worded my subject correctly. Here's my problem.. I've used query to combine 2 tables of data..
Here are my fields..
I've assignment_num field, project_num field, project_name field, emplyee_name field.
here are my data..
assignment_num field: 1001, 1002, 1003, 1004, 1005
project_num field: 20,20,15,16,15
employee_name field: tom peter, tom peter, tom peter, julie, sally
What I want is to display the employee name with 2 projects or more...
What i have done?
I've done a group by and then count project_num field.. I also added a condition whereby the countofproject_num > 1.. everything went well except that the countofproject_num display 3 instead 2..
pls help.
I just can't get my head round this one and can't even think of a keyword phrase to search on!
SELECT CompID, CaseRef, ServicesID, Summary
FROM qryAllStats;
In my query I need to return all records where there are more than 3 instances of field 'ServicesID' .
For instance in the recordset ServicesID 47 occurs 5 times while ServicesID 36 occurs 4 times and all other ServicesIDs occur 3 times or fewer.
I would need to return all of the records with ID 47 and 36. Is this do-able?
I have a form that is bound to a query that returns all records matching a set criteria (namely, the field ApprovalDate is null); the idea is that the user clicks on a command button which gives information, and if the user chooses to continue (vbYes), then the field ApprovalDate has its value set as the current date, and the record is saved.
Next, I have put in DoCmd.Requery to requery the form and effectively go to the next record wanting approval - this appears to work fine, however I need to add something to the code that handles a null return from the requery - preferably a message box and then have the form close.
I have a datasheet form listing prospect information.
Each prospect is assigned a position, there can be more than one prospect with the same position.
I'm trying to get a text box to lookup the prospects position and search the remaining rows for matching positions and return the total number found.
This data does not need to be stored anywhere, just a reference value for users to look at.
I have a field in Access 2010 called Section Number which generally holds two characters. The characters can be numbers, letters, or a combination. Examples are:
01
X1
KA
40
Sometimes this field holds three characters, such as:
01a
02b
I want to write a query that returns only the Section Numbers that contain two characters. The instances where the field holds three characters are too numerous and changeable to use a parameter that says, for example: not "01a" and not "02b"
Is there a way to write a parameter that means "not Section Numbers of three characters" or "not Section Numbers of more than 2 characters"?
In short, I want to know which records fail to append based on violating the primary key. (Win 7, Access 2010 32bit) Similar to how Access creates import table errors, but for append violations...
The DB takes a daily data dump. Failures to append (in this DB) indicate a status of "complete" that needs to be re-examined. (A true complete will not be present in the daily file). The daily file also contains all new daily work, thus it isn't just a list of "completed" tasks to re-examine.