Queries :: Listing Null Entries In A Second Table
Jul 31, 2013
I have a Membership List Table with a calculated field entitled Member Name.
The second table entitled Groups contains only 46 records each of which has up to 30 Fields also containing member names.
I Have written a query to establish which of the members from the single field of the first table do NOT featured in any of the fields and records of the second table. In the Query Design View I have listed 'Member name' from Table 1 followed by all the relevant member fields from Table 2, carrying the criteria 'Is Null'.
When I run the query, it merely lists all the members from Table 1.
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Jun 20, 2006
Hello,
I currently have a DB that has a field in a table that records which shift (A, B, or C) that some data was collected on. I am trying to write a Query in order to filter the results so that either the data from shifts A,B, or C show up, or if "All Shifts" is selected, then all the data shows up. I have another table set up that records the shift selection from a form. I was trying to use an Iif statement but it does not seem to be working for the "All Shifts" option. Selecting "Shift A" or "Shift B" etc. works fine.
IIf([ShiftSelect]="All Shifts","Shift [ABC]",[ShiftSelect])
**[ShiftSelect] containts the users selection for which shift they want to view.
I have also tried this with a wildcard statement (Like "*") instead of "Shift [ABC]", to see if I could get any data to show but I still get nothing when "All Shifts" is selected!
Let me know if you can see the problem, or know another way to go about this query!
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Jul 29, 2013
I have a form that feeds information to a query which in turn sets up a report. For clarity i will list out in basic terms what I have
Input Form
- Check Box to activate/De-activate a text field [chk-active]
- Text field for a parameter [txt-Parameter]
the query has a column that has null values from the originating table. These values will be added a t a later date, but need to be queried and reported at some business intervals.
In the query criteria for this column, I have the following Criteria
Like IIF([Forms]![ReportGenerator]![chk-Active]=0, "*", [Forms]![ReportGenerator]![txt-Parameter])[/I][/I]
I have tried for the last 5 hours to figure out how to write the formula to be able to get the blank entries to show up as well but have had no luck.
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Dec 16, 2013
My aim is to chart the career history of many people in my DB and my intention is to achieve this with two "Main" tables with many smaller tables linked to it.
Table 1 will contain the generic data about the individual, employee number, name, DOB, etc etc (there are many more fields) and Table 2 would hold their career history. Where they have worked, when, etc.
When viewing Table 1, I see all data, including a sub table showing career history, which is great. What I would like to do however, is have a query that will return all data from table 1 and Table 2 that refer to the employee number.
Attempts that I have made thus far, mean I have to enter the employee number twice (I would prefer to enter this only once) and then it gives me many pages (in report view) each page has all data from table 1, and one entry from table 2.
I would like to see all data from table 1 and then all data from table two, listed.
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Feb 15, 2006
Hi All,
I am wanting to build a table which consists of all the queries and tables in the database.
I am expecting column 1 to have all the queries and column 2 to contain all the tables that make up the query. So the table will look like this:
Queries - Linked Tables
Query1 - Table1
Query2 - Table1
Query2 - Table2
Query3 - Table1
Query3 - Table4
As you can see a table can be linked to any number of tables.
Now for my actual question. I don't want to have to type in all the queries and tables. I would like to choose any query and table from a drop down of all possible queries and tables that are currently in the database - like a list, where the list contains all the possible values.
I would then select the relevant entry.
Any pointers would be great.
Thanks,
Evan
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Jun 11, 2013
I have a table called Stock Levels which contains 3 fields. (ID, ProductID, StockLevel) ID is the Pkey, ProductID contains duplicates and StockLevel which contains different stock levels
and I am trying to remove the duplicates and retain the the data so I am left with the correct stock number
what I have done is the following, but I am still getting duplicate values in productid and stocklevels
SELECT DISTINCTROW id, productid, stocklevel into mynewtable from stocklevels
I have attached a screenshot of the table
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Oct 25, 2013
im in the middle of developing a database to log DOWNTIME of various machines in the factory. Basically myself and others will use it to log breakdown details and the amount of time (in HH:MM) the machine was off.
I have a form which will list details of a certain machine in a list box which i can populate using a query.
The list box will display 3 columns: Date of Breakdown, Machine Name and Downtime
I then have a text box below this that i would like to display the TOTAL amount of downtime for that machine (The listbox may have different information in it depending on the query criteria, e.g. It might display a certain month for a certain machine).
THE ISSUE i am having is its proving to be difficult to get the correct sum of the accumulative time to display correctly in the text box.
Is there a way i can use a query to calculate the total time of a column and return a value which is formatted as time (like this hhhh:mm or dd:hh:mm) or preferably use some VBA code on the form itself to total up the DOWNTIME column of the list box and display it with the correct format in the text
I have gotten close, but as the total amount of time exceeded 24 hours, it went past 00:00. I'm assuming it treated it as a clock and went into the next day? This is NOT what i am after, i need the total amount of days, hours spent on the machine and not a time of the day.
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Jun 22, 2013
I have 3 tables;
tblEmployees - Stores employee data
tblProcess - Stores process data
tblTraining - Stores data on which employees have trained on which process
tblEmployees has a 1 to many relationship to tblTraining through empID
tblProcess has a 1 to many relationship to tblTraining through pcsID
When a new Process is added, a query auto populates tblTraining with 1 record for each employee in tblEmployees. Equally when a new Employee is added, a query auto populates tblTraining with 1 record for each Process in tblProcess.
In theory this should ensure that every employee has a training record for every process (and vice versa). However, as many of us know, never assume the user wont find a way to mess things up!
So i want to have a query that can show me Employee and Process without a training record. I have been manipulating a SELECT (SELECT) query to pull this together, but i just keep coming up blank.
I have attached a copy of the relevant tables and query. I have deliberately deleted a training record for empID 6 on pcsID 1 AND empID102 on pcsID 2 (qryCheckTrainingRecordsBalance will show the processes these 2 DO have a training record for).
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Jun 24, 2005
I have a Qry that has a criteria of
Like "*" & [Forms]![FrmSearch![Cmbo1]
However on this field there are null field entries and even if the cmbo box is null it wont display these results.
I tood out the & [Forms]![FrmSearch![Cmbo1] section and just left the wild card and again only displayed the records where this field had an entry.
How can i get it so that when no selcetion has been made in the combo box all the records show up.
Many Thanks
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Mar 3, 2007
Hi, first of all I have to say I'm quite a noob at Access, so I apologise if my question seems stupid. :p I Googled for quite a bit looking for a solution but couldn't really get anything to work (maybe because I wasn't doing some of the possible solutions correctly?).
Anyway, I have a database with two tables, and I'm trying to make a QBF to search for data from these two tables. Quite a few of these entries have null values.
SELECT [M-Table].Firstc, [M-Table].Secondc, [S-Table].Thirdc
FROM [M-Table] LEFT JOIN [S-Table] ON [M-Table].Firstc = [S-Table].Firstc
WHERE
((([M-Table].Secondc) Like "*" & [Forms]![interface]![TxtSecondc] & "*")
AND (([Forms]![interface]![TxtFirstc]) Is Null)
AND (([Forms]![interface]![TxtThirdc]) Is Null))
OR ((([M-Table].Firstc) Like "*" & [Forms]![interface]![TxtFirstc] & "*")
AND (([Forms]![interface]![TxtThirdc]) Is Null)
AND (([Forms]![interface]![TxtSecondc]) Is Null))
OR ((([S-Table].Thirdc) Like "*" & [Forms]![interface]![TxtThirdc] & "*")
AND (([Forms]![interface]![TxtFirstc]) Is Null)
AND (([Forms]![interface]![TxtSecondc]) Is Null))
OR ((([M-Table].Firstc) Like "*" & [Forms]![interface]![TxtFirstc] & "*")
AND (([M-Table].Secondc) Like "*" & [Forms]![interface]![TxtSecondc] & "*")
AND (([Forms]![interface]![TxtThirdc]) Is Null))
OR ((([M-Table].Secondc) Like "*" & [Forms]![interface]![TxtSecondc] & "*")
AND (([S-Table].Thirdc) Like "*" & [Forms]![interface]![TxtThirdc] & "*")
AND (([Forms]![interface]![TxtFirstc]) Is Null))
OR ((([M-Table].Firstc) Like "*" & [Forms]![interface]![TxtFirstc] & "*")
AND (([M-Table].Secondc) Like "*" & [Forms]![interface]![TxtSecondc] & "*")
AND (([S-Table].Thirdc) Like "*" & [Forms]![interface]![TxtThirdc] & "*"))
OR ((([M-Table].Firstc) Like "*" & [Forms]![interface]![TxtFirstc] & "*")
AND (([S-Table].Thirdc) Like "*" & [Forms]![interface]![TxtThirdc] & "*")
AND (([Forms]![interface]![TxtSecondc]) Is Null));
This really long and tedious code was the only way I could get it to work such that in my query form, if I leave any one of the fields blank the search will still pull all the related results out, regardless of whether there are nulls in the values themselves, e.g. if I search for anything with "ab" in Secondc, it will give me all the data with "ab" in Secondc, even if there are null values for those entries in Firstc and Thirdc. Similarly for searches with the other fields.
I tried using IIF and Nz, first using IIF under Criteria, then I read somewhere that they should be used under Field rather than Criteria, but I couldn't really get it to work. Either the QBF wouldn't return any results, or it would return only those entries without null values, so if I searched for "ab" in Secondc, I wouldn't get the entries that had "ab" in Secondc but null values in either Firstc or Thirdc.
The problem with my solution is that I wouldn't be able to get it to work in another database with like 10 fields. The number of combinations would be a killer...
Is there any workaround? Many thanks! :)
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Nov 15, 2005
Hi there
I have some a little programing in microsoft access vb and so I am here asking for advice.
I need to copy a data value from one field down the list of null entries till it reaches the next value and then use that an so on in a loop.
E.G
[Area Code]
199a
null
null
null
null
132f
null
null
null
Regards
Luke
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Jan 24, 2012
I've built a form on my Access database that invites a user to enter a start date and an end date into two textboxes. When i press a command button, a parameter query runs which uses the two textboxes as the parameter's criteria. However, to ensure that both textboxes have a data entry, i have tried entering in some VBA that prompts the user to enter in a date if its left null...then set focus to that textbox: Here it is...
If IsNull(Me.txtWeight1) Then MsgBox "You must enter a minimum weight!"
Me.txtWeight1.SetFocus
Else
If IsNull(Me.txtWeight2) Then MsgBox "You must enter a maximum weight!"
Me.txtWeight2.SetFocus
Else
If IsNull(Me.txtWeight1) And IsNull(Me.txtWeight2) Then MsgBox "You must enter a min and max weight!"
End If
This will not compile for me! I've tried with and End If and without an End If and other stuff. Why won't it work?
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Dec 25, 2014
i have two data tables, one is depending on the other. now i need to delete the main table row depending on the subtable row if it is null.
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Apr 22, 2006
Hi,
Relevant to this query are two tables, tblNames and tblLinks.
I've been trying, with a very limited understanding, to generate a list of every tblName.Name where tblName.NameID IS NOT in tblLinks.NameID.
Is this something I can do in the query design view or do I need to work with raw SQL?
Any tips appreciated:)
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Mar 17, 2015
Is there a way to gain access to the Field Properties using VBA?
I'm trying to loop thru the Tables in a database and find out the Fields that are indexed in each table.
I can loop through the table Defs to get each table name and a list of Fields but I can't seems to get to the Field Properties, namely "INDEXED".
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Jul 14, 2013
Query4 is the result from left joining of Query3 and Query1 and I would like to delete some of the null data in query 4
while I execute the following code
DELETE DISTINCTROW Query4.*, [working hour] AS Expr1
FROM Query4
WHERE (((query4.[working hour])=0));
I get the warning of "Could not delete from specific table"
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Jul 1, 2013
I am currently working on an instrument datebase, I have a mainquery that takes care of user inputs from a form. The main fields that have been queried on are Type, System, and Manufacturer and they are all look-up fields that contain some null values.
On the same criteria row for these fields, I have
Like IIf([forms]![User Interface].[qtype2]="","*",[forms]![User Interface].[qtype2])
Like IIf([forms]![User Interface].[qsys2]="","*",[forms]![User Interface].[qsys2])
Like IIf([forms]![User Interface].[qman1]="","*",[forms]![User Interface].[qman1])
qtype, qsys and qman are the user inputs from the user interface that returns look-up table values.
This works fine when all 3 of these fields are all filled out for a certain instrument. The problem arise when some fields of the instrument are left blank or is null. The instrument won't show up in a query at all. What I wanted it to do is to show everything including the ones with null fields when the user input are null or "". When the user specifies certain requirement I only want to show the ones that are not null. I understand that putting them on the same row means AND, I have tried to OR them and did not have the result i wanted.
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Jun 10, 2013
Trying to run a query using criteria to populate the query by looking at information from a field on a form, if from is closed I need that criteria to look at the table and return all date in table.
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Jul 24, 2013
I've got a table tblPatienten, a table tblRechnung and a form frmRechnung.
The primary key in tblPatienten is KundenNummer, the primary key in tblRechnung is RechnungsNummer. The relationship between tblPatienten and tblRechnung is one to many.
Now, every patient (stored in tblPatienten) is allowed to make multiple orders (stored in tblRechnung).
How can I assign each new order entry in frmRechnung to an existing patient in tblPatienten?
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Nov 18, 2013
I have one main table with a list of equipment. I have a second table where there will be a form for damage reports.
What is the easiest way to make multiple entries from the second table correspond with a single entry on the main table?
Some equipment pieces might have dozens of damage reports, while some might not have any.
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Jul 30, 2007
Is there a way to find and remove duplicate entries in tables by using queries.....if so, how specifically?
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Dec 16, 2014
I have a tblhealthrecord that has many multiple entries for the same animalID. Would like to pull up all records from this tbl for one animal. I can sort them later but just need to know what to ask for so I can read upon them. I at first thought this could be based on date but not really since you could have multiple entries in one day.
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Nov 26, 2013
I have a query result-set with several columns: A, B, C ,D. All Four of these columns display numbers. From this query, which I will call the "SetUp"query, I want to query it and obtain the average for each of the columns A, B , C ,D. However, some of the values in columns A, B , C ,D are zero. If I use the standard 'Avg' function in Access, it averages the column AND INCLUDES THE ZEROS IN THE AVERAGE. How can I get an average of just all the non-zero entries?
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Aug 11, 2005
I have a query that feeds a report. This report shows a "Set" and the "Charge Numbers" associated with it. Each set could have a possibility of more than one set of IT numbers. This means there could be say 2 entries for set "D7" and IT numbers for both of them.
As a result when I run the query, and say the set has 2 Charge numbers, it will bring back 2 results, with 2 charge numbers on each of them, which is correct. So if a set had 4 charge numbers assigned to it, 4 results would show with 4 charge numbers for each result.
Is there any way I can make it only show one of those results as they are identical?
I know this is confusing, bare with me
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Jun 25, 2014
I'm trying to use access to identify how many times an indiviual appears in my database. I've got a large file which gives me all referrals, each referral comes with two identifiers, one unique to the person, another unique to the referral. This means that the person unique number may be repeated multiple times (if a person has more than one referral) but the referral number would be different each time.
I've run a query to identify the duplicates, i.e. the records where the person unique identifier is repeated. What I am trying to do is work out now how many people have been referred twice, how many three times etc. The original query looks something like this (but on a much bigger scale).
Person Referral
1 A
1 B
1 C
2 D
2 E
3 F
3 G
3 H
What I'm after is a query that will tell me that two people were referred three times (1 and 3) and that one was referred twice (2) and so on.
I'm on Access 2010 if it makes any difference.
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Sep 19, 2013
I was looking to run a query using one text box with multiple entries. For example : EP342, EP423, EP234. Is there a way to do this in VB?
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