Queries :: SQL Where Statement Linked To Fields When Field Is Empty
May 23, 2013
I'm having trouble with using a where statement linked to fields when the field is empty. I need a way to say if field is null then 'do nothing'/'select all' else use the text from the box.
I have a form (ServicesRCSSearch) which has 3 combo boxes (Location1, Location2 and Location3). These fields are linked to a query. The button on the form generates the query.
My SQL for the query is currently:
Select Services.Key, Services.Location, Services_1.Location, Services_2.Location
From Services, Services_1, Services_2 (copies of the same table all left joined)
Where
((IIf(forms!ServicesRCSSearch!Location1 Is Null,"",services.Location=forms!ServicesRCSSearch! Location1))<>False)
And ((Services_1.Location)=IIf(forms!ServicesRCSSearch !Location2 Is Null,forms!ServicesRCSSearch!Location1,forms!Servi cesRCSSearch!Location2))
And ((Services_2.Location)=IIf(forms!ServicesRCSSearch !Location3 Is Null,forms!ServicesRCSSearch!Location1,forms!Servi cesRCSSearch!Location3))
This works in that it uses the fields to filter the query but when Location1 is empty there are no results as you can see from the code.
I am just querying a single table, no relationship involved with another table. As you can see form the attached jpeg, the ZIP field in some cases is empty. I would run a search using Is NULL but the field is NOT numerical. It's a long story but I had to make this field a TEXT field. Basically, what statement do I have to insert in the criteria field to just pull up the EMPTY ZIP fields?
I have a query which is supposed to search for all engines with a power rating between a user-specified range ('Rated Power'). The results should state all of these engines along with a few more related details ('System_ID_No', 'Project No', 'Rated Speed', 'Other Ratings' and 'Cylinder Capacity') that are useful to know. However, the problem arises when these other fields are empty. If empty, the related engine results do not appear in the final results spreadsheet. How do I make sure they are included aswell?
SQL:
SELECT tblProjectOverview.System_ID_No, tblProjectOverview.[Project No], tblProjectOverview.Customer, tblEnginePerformance.[Rated Power], tblEnginePerformance.[Rated Speed], tblEnginePerformance.[Other Ratings], tblEngineDefinition.[Cylinder Capacity] FROM (tblProjectOverview INNER JOIN tblEnginePerformance ON tblProjectOverview.[System_ID_No] = tblEnginePerformance.[Sytem_ID_No]) INNER JOIN tblEngineDefinition ON tblProjectOverview.System_ID_No = tblEngineDefinition.System_ID_No WHERE (((tblEnginePerformance.[Rated Power]) Between [Enter minimum power rating (kW):] And [Enter maximum power rating (kW):]));
I have a text field I need to convert to numbers. There are both empty and non empty fields. I then need to show the numbers like this "1.234" and a "*" in the empty fields.
I have tried to convert the fields with Cint, but I get an #Error in the empty fields.
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 have a query that holds data based on a field. If the field [Device In] is "TimeStation-1" in TblTime for example it holds "AV" in the field [House]. Trouble is some fields are blank and when this is so I want it to pull the last two letters from the [Notes] field. I have attached the database. The query is [QryDeductionsandSleep Ins].
I have a created a query which I want to update a table. The field is called DTP. I have the Workingdays2 module in place as well as the Holidays Table. The dates (date only) are called Time in and Transaction date. I want the table to update records only if the entry in Completed is Yes. I have attached screenshot of what I have in query. I am no good whatsoever at VBA so I used the Query design view. It shows how many records will be updated (which is a valid number) and shows me which field will be updated. However when I run the query and then opend the Table the DTP field is empty.
I have a problem that I can't seem to solve in SQL for my access 2010 query.
Let's say I have a the price of and for every year.
In the tables I have A building number, a building type, and electricity and water predictions for this year and many upcoming years (up to 40 years)
I need to apply a change to any building with the building type BRT to show only 10 percent of the electricity and water for ALL years (up to year 2052). So building 5 would show 8.5, 5.4, 9.5, 7.4, and so on.
Im trying to concatenate a bunch of fields (50 arghh) which each are either blank or just contain one letter. This was someone elses setup for an attendance register which I think is an odd way of doing it. I would have used one field and then to get the mark for a week take a substring at the appropriate position. Anyway im trying to replace an empty string field with a letter to represent the register hasn't been marked using sql statement:
SELECT [400 Student Marks].acad_period, [400 Student Marks].student_id, [400 Student Marks].register_id, [400 Student Marks].register_group, Replace([1],"","U") AS attendance FROM [400 Student Marks];
[1] being the first register week then I would have concatenated with [2] etc...
This however causes an error each time on the attendance field so im guessing replace doesn't work on empty strings. Is there a way round this/alternative.
'WHERE ((OperationalRiskEventTable.DateReported)>=Forms!U pdateForm!UDateBegin And (OperationalRiskEventTable.DateReported)<=Forms!Up dateForm!UDateEnd)'
in a query by form.
The problem is that you have to enter a date in the between values for results to show. If I don't enter information into a different field such as Full Name but I enter in 40 into Age then everyone that is 40 years old will show. On the other hand if I enter 40 into the Age field but I leave the Date Reported fields empty then no results will show.
How can I change it so that I don't have to enter dates into the date reported fields for results to show?
I am working on a hired plant database and want to limit the combo box on the hired form to only list items not on hire.I thought I could do this using the IssueDate and ReturnDate fields within a query with an IIf statement forcing the Yes/No field to choose Yes when there is a date in the IssueDate field and No when the ReturnDate field has a date entered.
I am having some trouble with an iif statement as selecting the field..I have two columns, one called [sdCounterpartyprice] and one called [bid]I want to select the [bid] if it's not equal to Null or 0, if it is equal to that then pick [sdCounterpartyprice]this doesn't work
Code: CptyPrice: IIf ([bid] is null or = 0; [sdCounterpartyprice]; [bid])
I am working on MS Access program where i import data from Excel and i would like to generate a report in MS Access where the fields are empty. Like the MS Access generate a table of errors when we import data and shows information like field name and row number along with Type Conversion label. Can i generate similar table from an MS Access table where fields are null.
I've been using a SELECT INTO statement to import data from a linked text file into a temporary table in Access. Something along the lines of :
SELECT [tblLink].[fld1] AS Field1, [tblLink].[fld2] AS Field2, [tblLink].[fld3] AS Field3 INTO [tblTemp] FROM [tblLink]
(There's an INNER JOIN in there and some Nz / CLng functions but just want to keep it simple...)
Now - I've just realised I also need to create a couple of extra 'dummy' fields in my temporary table (for later on in the show) and I need them to be Yes/No format (will set them to False at first, then run some separate queries later to update them)
I tried this :
SELECT [tblLink].[fld1] AS Field1, [tblLink].[fld2] AS Field2, [tblLink].[fld3] AS Field3, False AS Field4, False AS Field5 INTO [tblTemp] FROM [tblLink]
But this sets Field4 and Field5 as Number fields, with each record given a value of 0. What syntax is required in the SQL to make these fields Yes/No rather than Number?
I'm trying to make a nested if then statement in a query field, and I can't figure out why I can't get my formula to work:
Volume: IIf([MethodCode]="K",[total]*12.54*0.026873,IIf([MethodCode]="S",([length]*[width]*[depth])/2,IIf([MethodCode]="M" And [Location]="SH",[total]*5.08*0.026873,IIf([MethodCode]="M" And [Location]="C",[total]*18.58*0.026873," "))))
I keep getting the "data type mismatch in criteria expression" error. If I separate out all the individual if then statements individually, they work. But if I connect them all as a nested if then it doesn't work.
I am building a form that uses list box selections on the form to make a temporary query and open the results in Excel.
It mostly works in just trying to make it more functional.
Currently the listbox that contains the first and last names of the personnel also has a unique shorttext 'number' as a primary key for the table (bad choice in my opinion but I didn't design the database I just have to work with it).
The short text primary key is hidden by an option given in the listbox wizard that let me set that field width to zero but still search on it. This is how I currently build the query's where clause when it involves names. I search the primary key.
I would like to update the names list box based upon which cities and locations are selected (both are multi-select).
Do I need to change how I make the "where" clause to use first and last names or an I use the same query and just hide the USER_ID
The query looks like this
Code:
SELECT DISTINCT t_asset_personnel.LAST_NAME, t_asset_personnel.FIRST_NAME, t_asset_personnel.USER_PHY_ID FROM t_asset_personnel INNER JOIN t_asset_master ON t_asset_personnel.USER_PHY_ID = t_asset_master.ASSIGNED_TO ORDER BY t_asset_personnel.LAST_NAME;
And the list box wizard hides USER_PHY_ID
By setting the width to zero
If I make my own query in the City_After_Update()
Can I do something like this
Code:
SELECT DISTINCT t_asset_personnel.LAST_NAME, t_asset_personnel.FIRST_NAME, t_asset_personnel.USER_PHY_ID .fieldWidth(0)FROM t_asset_personnel INNER JOIN t_asset_master ON t_asset_personnel.USER_PHY_ID = t_asset_master.ASSIGNED_TO WHERE [forms]![myform]![citylist].[itemsSelected]'obviously more code is needed here this is just for conceptual illustration ORDER BY t_asset_personnel.LAST_NAME;
I have two tables each with an ID field (autonumber/PK/No Dup etc).
I want to append two fields from one table to the other table. I have set up an Append Query to do this but it won't work - I get the following error - "The INSERT INTO statement contains the following unknown field: 'FiID'...."
I am developing a calender to display HOTEL room occupancy (past,present) and combine with future "outlook" dates and 1/0 values from active registrations that go beyond the present date.
I am working with MS ACCESS 2007. My problem is ONE SPECIFIC QUERY AND IIF STATEMENT. I want to concatenate some text (using &) along with numbers converted to text (using the CSTr function). I am using iif function and I want to use the full text string as a variable argument to be executed in the iif function. The result of the &concatenate is a text field like [p1] or [p2] or [p#] with numbers 1-31.
But, I do not want the final result as the argument. I want the query and iif to use the string expression written into the argument as the variable argument that can be calculated based on OTHER numbers that change everyday in the daily run of the calender.
The field in the statement [calc number] is a date conversion factor that changes everyday.
I want the iif statement to execute using the string as a variable argument. I am writing only within the QUERY to define the query object. I am not writing into any SQL module or code. My field definition and iif statement is below (calc number changes everyday)
I do not have greater-than key on this international keyboard !
When I use this in an update query, I get format conversion error. When I use the same definition in MAKE-TABLE query, it gives the resolved value "[p1]" for the value of [CalDate18] ......... that is not what I want.
I want the string to be taken literally and executed. Seems there may be a special character to precede the argument or WRAP the argument such as done in Excel. Example # "[p" & [calc number] & "]" #
I have a query that appends records to a table with a constant numer of fields. so sometimes I have fields with no data. is there any way to create query which selects only fields with data.
I have an Input form that does not clear the fields after I hit the Save button. Data Entry is set to YES. If I use the navigation bar, there is no problem, but I would like to have the fields empty after hitting the Save Button, so that the navigation bar can be removed. What is wrong?
I am trying to make a query with two tables. Each row consist of a student ID, their name and all their personal information. Both tables are exactly the same. But one table is a link table. That link table gets update every so often from an outside program and the other table is not linked. I want to be able to run a query that updates certain fields called "address changes". I have figured out how to find the updates, but I am having a problem with a field that is blank. If I have a field in the non-linked table that is empty but there is information in the linked table, it does not see it. Is there a way to get around this empty field problem?
Now, I know that something in the UPDATE statement does not match my select statement.What should my Update Statement be, in order to update all the columns in the joined tables?
This is working fine as long as I input the values for all the fields...when some values are missing, I get the error that Access can't append the query due to validation rule violations...got no clue what to do !
