What would be an equivalent expression for ISNULL(datafield, 0) for a table/matrix cell? I am using iif( Len().. to find out if there is something in the cell, and displaying zero in the cell if the length of cell item is 0, however am wondering if there is any better/elegant way of doing that?
I am facing some problems in displaying data in a chart on a report. Let me give you a background on the report
The report has 8 parameters, Industry,CType,PType, S#, ECode, Start Date, End Date and Trend.
The layout of the report has a table and a chart.
Both the table and the chart need to display Normalized Value ( count of ECode / count of PType that are closed in the date range selected) and the Trend ( where the trend can be Weekly, Monthly, Yearly or Quarterly).
Both the chart and the table should display the data for the entire date range i.e if the Trend is Month and the Date Range is Jan 2007 Jan 2008, then the table and the chart should display months from Jan 2007, Feb 2007 .... Jan 2008 irrespective of whether or not there are error codes present for that month.
In order to satisfy the point 4 mentioned above, we have created the main dataset in such a way that it would have one row for each day between Jan 2007 to Jan 2008. Any fields that do not have data corresponding to a date will come up as NULL in the dataset.
Now, we need to display a chart in the report which would be a Trend v/s the Normalized Value chart for each ECode. So, we have put in the Normalized value in the 'Value' field of the chart, Trend group in the 'Category' field of the chart and ECode in the 'Series' group of the chart. The chart displays fine except for one extra series for the NULL values in the Error Code ( the one in green below). Is there any way in which we can do away with this NULL series without changing the dataset? I tried using filters for the 'Series' but it doesn't work ( used filters like <>NULL, <> "" , <>Nothing, cstr(ECode) <> NULL/"" etc ).
I have an issue in a group for a Matrix report I have created. Currently if a field in a table has null values in it, the grouping does not show in the matrix. Is there a way to force a group to show if there are Null values? I figure there must be a property to toggle on/off that would take care of this but I cannot seem to find it.
I am newbie to reporting services and I need some help. Could any one please let me know how to replace Null value with 0 in the data section of the Matrix. I don't want blanks to be displayed on the report, I want those to be replaced with 0's.
I have a report thats fully functional. I just want to add a filter so that my "Visits" field only displays the Visits per day that are less then 6. When i try to filter out the matrix or the group, it tells me the datatypes are different . Something about int32. Its in a matrix, but i have seen this happen in a table too, so i guessing thats not the problem. I just want to be able to display the information for Sales Reps with less then 6 Visits. Any help, will be greatlly appreciated.
I'm a real novice user and I we use SQL Server. I have a table called TableLog that has the 4 columns. The first column is repeated x number of times for each value in the second column. I'd like to see this information put into a matrix where I could tell if there are any missing intersections. In addition, I need to insert a WHERE clause that says "BETWEEN 20090000 AND 20100000" for the first and second columns.
I have a pivot transform that pivots a batch type. After the pivot, each batch type has its own row with null values for the other batch types that were pivoted. I want to group two fields and max() the remaining batch types so that the multiple rows are displayed on one row. I tried using the aggregate transform, but since the batch type field is a string, the max() function fails in the package. Is there another transform or can I use the aggragate transform another way so that the max() will work on a string?
I'm using an ObjectDataSource in Visual Studio to retrieve records from a SQL Server 2005 database. I have a very simple dilemma. In a table I have fields FirstName, Surname, Address1, Address2, Address3 etc. None of these are mandatory fields. It is quite common for the user not to enter data in Address2, Address3, so the values are <null> in the SQL table. In Visual Studio 2005 I have an aspx form where users can pass search parameters to the ObjectDataSource and the results are returned according to the passed in parameters. The WHERE clause in my Table Adapter is:WHERE (Address1 LIKE @Address1 + '%') AND (Address2 LIKE @Address2 + '%') AND (Address3 LIKE @Address3 + '%') AND (FirstName LIKE @FirstName + '%') AND (Surname LIKE @Surname + '%') If, for example, I simply want to search WHERE FirstName LIKE ‘R’, this does not return any results if the value of Address3 is <null> My query is this: Could someone please show me the best way in Visual Studio 2005 to return records even if one of the Address fields is <null>. For reference, I have tried: Address3 LIKE @Address3 + '%' OR IS NULLThis does work, however itsimply returns every instance where Address3 is <null> (accounting for about 95% of the records in the database). Thanks in advance Simon
Question: Why would I not be able to import an Access 97 table inwhich some records have null values in fields that allow null values?Wouldn't the table's design be imported first, bringing the columns'"allow nulls" attribute with it?I'm dealing with both text and numeric columns. Not all columnscontaining nulls cause an error.Thanks,Bob C.
I'm trying to do a Clr function wiht null values but I have an error. My Clr is like this:
using System; using System.Data; using System.Data.SqlClient; using System.Data.SqlTypes; using Microsoft.SqlServer.Server; using System.Collections; using System.Text;
[code]...
A .NET Framework error occurred during execution of user-defined routine or aggregate "function":
System.InvalidCastException: La conversión especificada no es válida. System.InvalidCastException:   en Microsoft.SqlServer.Server.ValueUtilsSmi.GetSqlInt16(SmiEventSink_Default sink, ITypedGettersV3 getters, Int32 ordinal, SmiMetaData metaData)   en UserDefinedFunctions.function()
I extracted data from a flat file using SSIS package and load them into destination table. One column contains no data. Data type of that column is varchar(9). I want to display "NULL" values in that column.
I used LOOK up transformation and used the following query.
SELECT PassThroughRouting = CASE PassThroughRouting WHEN 'NULL' THEN 'NULL' END FROM EPICWareTable
I have two tables 1) tblCustomer (ID, Name, City) 2) tblemp (ID, NAME, Dept.ID, tblcustomer.ID) Both the tables have ID as PKA emp can be either assigned a) All customers b)single customer c) NO customer Pls note:- there will never be 2 or 3 customer linked to emp (my actuall requirement tables are different but to explain i am using the above tables) I know how to assign single customer......but had problem how to link all customers and "no customer" Please tell me if the following solution is right?1) I will manually insert a record in tblCustomer with id 0 as " all customers" and will not allow the user to delete it 2) store null in FK if it is "no customer" Also please tell me is it ok to store one more value in tblCustomer as -1 and take it as "No customer" I have a DDL in the Employee page which should be displaying the names of allthe customers with 2 extra values "ALL CUSTOMERS" and "SELECT" Select is the default value in DDL which says "NO CUSTOMER" selected yet Thank youSara
I have a table with data in two columns, item and system. I am trying to accomplish is we want to compare if an item exists in 1, 2 or all systems. If it exists, show item under that system's column, and display NULL in the other columns.
I have aSQL Fiddle that will allow you to visualize the schema.
The closest I've come to solving this is a SQL pivot, however, this is dependent on me knowing the name of the items, which I won't in a real life scenario.
select [system 1], [system 2], [system 3] from ( SELECT distinct system, item FROM test where item = 'item 1' ) x pivot ( max(item)
HiI need some help on achieving the following:I wrote a querie which collects Data out of three Tables, the Resultlooks like this:SET NOCOUNT ONDECLARE @ROWINTDECLARE @CURPTNO CURSORSET @CURPTNO = CURSORFORSELECT * FROM TEMPOPEN @CURPTNOFETCH NEXT FROM @CURPTNOINTO @ROWWHILE (@@FETCH_STATUS = 0)BEGINSELECT ONE.CYNO, ONE.ROLE, ONE.ROL_BEZ, ONE.PTNO, ONE.NOCY, TWO.TEXTAS NOCY_TEXTFROM(SELECT CY.CYNO,RE.CYNO AS RECYNO, RTRIM(RE.ROLE) AS ROLE, RTRIM(V_ROLE.TEXT) ASROL_BEZ,RE.PTNO AS PTNO, RTRIM(RE.NAME) AS SACHBEARBEITER, RE.NOCYFROM CYRIGHT OUTER JOINRE ON RE.CYNO = CY.CYNOINNER JOINV_ROLE ON RE.ROLE = V_ROLE.CODEWHERE (RE.PTNO IN(SELECT PT.PTNOFROM PTWHERE PT.PTNO IN(@ROW)AND V_ROLE.LANGUAGE = PT.CLANG))) AS ONELEFT JOIN(SELECT V_NOCY.CODE, V_NOCY.TEXTFROM V_NOCYINNER JOINPT ON PT.CLANG = V_NOCY.LANGUAGEAND PT.PTNO IN (SELECT PT.PTNOFROM PTWHERE PT.PTNO IN(@ROW))) AS TWOON ONE.NOCY = TWO.CODEFETCH NEXT FROM @CURPTNOINTO @ROWENDCLOSE @CURPTNODEALLOCATE @CURPTNOThe Result looks like this:RS1:6313,1300,Architekt,99737505,NULL,NULL2392762,100,Bauherr,99737505,NULL,NULLRS2:2693265,100,Bauherr,99756900,NULL,NULLNULL,1,Planer,99756900,2,Bauherr macht Pläne selberRS3:2691919,100,Bauherr,99755058,NULL,NULL2691962,6000,Kontakt,99755058,NULL,NULLMy Problem is, that I need to have all the Resultsets in one Table atthe end.So my further undertaking was to create a Temp Table with theexpectation to receive all the resultsets in one Step.The TSQL for this looks like that:SET NOCOUNT ONCREATE TABLE #CYRE_TEMP(CYNOINT NULL,ROLEINT NULL,ROL_BEZVARCHAR (60) NULL,PTNOINT NULL ,NOCYINT NULL,TEXTVARCHAR (60) NULL)GODECLARE @CYNOINT,@ROLEINT,@ROL_BEZVARCHAR (60),@PTNOINT,@NOCYINT,@TEXTVARCHAR (60),@ROWINT,@CURPTNOCURSORSET @CURPTNO = CURSOR FORSELECT PTNO FROM TEMPOPEN @CURPTNOFETCH NEXT FROM @CURPTNOINTO @ROWWHILE (@@FETCH_STATUS = 0)BEGININSERT INTO #CYRE_TEMP (CYNO, ROLE, ROL_BEZ, PTNO, NOCY, TEXT)VALUES(@CYNO,@ROLE ,@ROL_BEZ ,@PTNO ,@NOCY ,@TEXT)SELECT @CYNO = ONE.CYNO,@ROLE = ONE.ROLE,@ROL_BEZ = ONE.ROL_BEZ,@PTNO = ONE.PTNO,@NOCY = ONE.NOCY,@TEXT = TWO.TEXTFROM(SELECT CY.CYNO, RTRIM(RE.ROLE) AS ROLE, RTRIM(V_ROLE.TEXT) ASROL_BEZ,RE.PTNO AS PTNO, RTRIM(RE.NAME) AS SACHBEARBEITER, RE.NOCYFROM CYRIGHT OUTER JOINRE ON RE.CYNO = CY.CYNOINNER JOINV_ROLE ON RE.ROLE = V_ROLE.CODEWHERE (RE.PTNO IN(SELECT PT.PTNOFROM PTWHERE PT.PTNO =@ROWAND V_ROLE.LANGUAGE = PT.CLANG))) AS ONELEFT JOIN(SELECT V_NOCY.CODE, V_NOCY.TEXTFROM V_NOCYINNER JOINPT ON PT.CLANG = V_NOCY.LANGUAGEAND PT.PTNO IN (SELECT PT.PTNOFROM PTWHERE PT.PTNO =@ROW)) AS TWOON ONE.NOCY = TWO.CODEFETCH NEXT FROM @CURPTNOINTO @ROWENDCLOSE @CURPTNODEALLOCATE @CURPTNOSELECT * FROM #CYRE_TEMPDROP TABLE #CYRE_TEMPGOAnd the Output looks like this now:Q1:NULL,NULL,NULL,NULL,NULL,NULL2392762,100,Bauherr,99737505,NULL,NULLNULL,1,Planer,99756900,2,Bauherr macht Pläne selberCan someone help me getting all the 6 Rows into one Table as Output?I appreciate any available Help on this..Ssscha
1) Cannot have results in which both m.homephone & d.homephone are both null, or both m.workphone & d.workphone are both null in the result set
2) We also do not want to see any combos where one homephone is null and the other has only the char 0....same for workphone...no null & 0 combinations.
e.g.
m.homephone d.homephone
null 0
0 null
The phone fields are varchar
I know this is hidiously wrong but is my first sloppy attempt at best: select m.number, m.homephone as master_homephone, d.homephone as debtor_homephone, m.workphone as master_workphone, d.workphone as debtor_workphone
FROM master m
INNER JOIN debtors d ON d.Number = m.number
where (d.homephone <> m.homephone OR d.workphone <> m.workphone) AND (d.homephone IS NOT NULL AND m.homephone IS NOT NULL) AND (d.workphone IS NOT NULL AND m.workphone IS NOT NULL) AND NOT ((d.homephone IS NULL AND m.homephone = '0') OR (d.homephone = '0' AND m.homephone IS NULL)) AND NOT ((d.workphone IS NULL AND m.workphone = '0') OR (d.workphone = '0' AND m.workphone IS NULL))
We are just upgrading a server from 2000 to 2005 and we are getting the message below when we execute a sql statement against a table with a date field with null values:
"Error converting data type DBTYPE_DBTIMESTAMP to datetime."
I have a data transform from a flat-file to a SQL server database. Some of the flat-file fields have NULL values. The SQL table I'm importing into does not allow NULL values in any field, but each field has a Default value specified.
I need to have it so that if a null value comes across in a field using the data transform, it takes the table default on import. I could of sworn I had this working a few days ago, but I get errors now that state I'm violating table constraints. Has anyone done this before?
Hi -- I'm starting an ASP.NET 2.0 application which contains a page with a checkbox and gridview control on it. In its default state the gridview displays all the records from a table pulled from a SQL Server database (via a SqlDataSource object). When the user checks the checkbox, I want the gridview to display only the records where one of the columns is not null. But I've been unable to construct the WHERE clause of the SQLDataSource object correctly. I see that I can hard-code the SqlDataSource object so that the column to be filtered is always NULL or always NOT NULL. But I want this filtering to be more dynamic such that the decision to show all or non-null records happens at run-time. Should I be using two SqlDataSource objects -- one for the NOT NULL condition and one for the "all records" condition? Then when the user checks the checkbox, the gridview would be configured to point to the appropriate SqlDataSource object. (???) Seems like a bit of overhead with that approach. I'm hoping there's a more elegant way to get this done. Please let me know if you need more information. Thanks in advance. Bill
I have gridview and i want to ignor that filtering if that parameter is empty how do i write that query. my query is select * from UserMAster where UserId=@USerID and RoleId=@RoleId if @UserId is blank then i want to select all records without filtering with user Id a nd if i have passed null or anything as parameter in roleId then alsoi want all the records if it contain value then i want to do filetring is it possible to with query. or else send me some alternative so that i don't need to execute more query.
I have tables and a function as representated by the code below. The names  for objects here are just for representation and not the actual names of objects. Table RDTEST may have one or multiple values for RD for each PID. So the function GIVERD will return one or multiple values of RD for each value of PID passed to it.
When I run the following query, I get the required result except the rows for CID 500 for which PID is NULL in table T1. I want the rows for CID 500 as well with PID values as NULL.
SELECT  A.CID, A.ANI, A.PID, B.RD FROM T1 AS A CROSS APPLY GIVERD(A.PID) B
There's some SQL below (T-SQL) & I'm wanting to have this result set grouped by Venue_ID in order to remove rows where there are duplicate values contained in just one column.
The columns BCOM_ID contain unique values, but Venue_ID can have duplicate values. I only want to get rows for one instance of the Venue_ID (per BCOM_ID) - doesn't matter which instance but basically, no duplicates.
Oh yes, one of the columns is a Bit column.
Any ideas would be welcome & appreciated!
Many thanks, Darren darren@darrenbrook.fsnet.co.uk
SQL:-
SELECT Booking_Header.BH_ID, Booking_Header.Booking_Header_Description, Booking_Header.BStat_ID, Booking_Header.BT_ID, Booking_Header.Tagged, Booking_Header.Status_Timestamp, Booking_Header.Start_Date, Booking_Header.Days_Qty, Proposal.PPL_ID, Proposal.PPL_Status, Booking_Component.BCOM_ID, Booking_Component.Component_Description, Booking_Component.Venue_ID, Venue.Venue_Code, Venue.Description, Address.Address_ID, Address.Town, Booking_Status.BStat_Description, Booking_Type.Type_Description FROM dbo.Booking_Header INNER JOIN dbo.Proposal ON dbo.Booking_Header.BH_ID = dbo.Proposal.BH_ID INNER JOIN dbo.Booking_Component ON dbo.Proposal.PPL_ID = dbo.Booking_Component.PPL_ID INNER JOIN dbo.Venue ON dbo.Booking_Component.Venue_ID = dbo.Venue.VE_ID INNER JOIN dbo.Address ON dbo.Venue.VE_ID = dbo.Address.VE_ID INNER JOIN dbo.Booking_Status ON dbo.Booking_Header.BStat_ID = dbo.Booking_Status.BStat_ID INNER JOIN dbo.Booking_Type ON dbo.Booking_Header.BT_ID = dbo.Booking_Type.BT_ID WHERE (dbo.Proposal.PPL_Status = 1) AND (dbo.Booking_Header.BH_ID = 10)
I am using SQL 2005. I have a SELECT query in a stored proc with 3 parameters: @subaccount,@numDaysCutoff,@numDaysPcts. The proc needs to be modified to return data when subaccount values are any of these:
FRRIJ FRRIC FRMM ROBECO FRJV MAIL FRUKV FRICE
Currently I use a WHERE condition and am able to get data correctly. However, for a NULL value I should get everything including those not in the above list. Should I use CASE statement instead? How?
@subaccount VARCHAR(8) = NULL , @numDaysCutoff INT = 1 , @numDaysPcts INT = 1
SELECT Subaccount = ISNULL(h.subaccount, lo.subaccount) , SecurityID = ISNULL(h.security_id, lo.security_id) , SecurityName = s.name , QtyHeldAndPending = ISNULL(h.quantity, 0) + (CASE WHEN lo.type = 1 THEN lo.resulting_quantity * (-1) WHEN lo.type = 2 THEN lo.resulting_quantity ELSE 0 END ) , L.AverageDailyVolume , XDaysVol = L.AverageDailyVolume * @numDaysPcts , CutoffVol = L.AverageDailyVolume * @numDaysCutoff , DaysVolHeld = h.quantity / NULLIF(L.AverageDailyVolume, 0) , HeldPctNDaysVol = h.quantity / NULLIF((L.AverageDailyVolume * @numDaysPcts), 0) * 100 , TargetedHoldingsUSD = tm.ApprovedPortfolioTarget * iv.value_usd , CutoffVolUSD = L.AverageDailyVolume * @numDaysCutoff * s.price_usd , TargetedPctNDaysVol = (tm.ApprovedPortfolioTarget * iv.value_usd) / NULLIF((L.AverageDailyVolume * @numDaysPcts * s.price_usd), 0) * 100 , DaysVolTargeted = (tm.ApprovedPortfolioTarget * iv.value_usd) / NULLIF((L.AverageDailyVolume * s.price_usd), 0) , NDaysCutoff = @numDaysCutoff , NDaysPcts = @numDaysPcts FROM subaccount_positions_table h --vGlobalHoldings h JOIN iv_subaccount_table iv ON iv.subaccount = h.subaccount FULL OUTER JOIN LiveOrders lo ON lo.subaccount = h.subaccount AND lo.security_id = h.security_id FULL OUTER JOIN TM_DerivedSecurityTargetDetail tm ON tm.Subaccount = h.subaccount AND tm.SecurityID = h.security_id LEFT JOIN dbo.security_table s ON s.security_id = COALESCE(h.security_id, lo.security_id) LEFT JOIN dbo.SecurityLiquidity L ON L.SecurityID = h.security_id AND SourceID = 99 WHERE (h.subaccount = ISNULL(@subaccount, h.subaccount) OR lo.subaccount = ISNULL(@subaccount, h.subaccount) ) AND status = 1 AND ( h.quantity > (L.AverageDailyVolume * @numDaysCutoff) -- qtyHeld > XDaysVol OR -- Targeted Vol exceeds cutoff ISNULL((tm.ApprovedPortfolioTarget * iv.value_usd), 0) > ISNULL((L.AverageDailyVolume * @numDaysCutoff * s.price_usd), 0) -- Target > XDaysVol ) ORDER BY ISNULL(h.subaccount, lo.subaccount), ISNULL(h.security_id, lo.security_id)
I'm building a report that has a column in the table called countries of origin, that column can contain data like "USA","China" ( normal countries) but some rows can also contain "USA, China, Australia" ( multiple counties in one row).
I'm trying to build a filter to filter my results :
-I have a data set created with a list of all world countries
-I've Build a Parameter containing a drop down list with all countries
--- My problem is when I want to create the filter in my main data set , I can so it , but when I search for example for "USA" , I don't get the lines where there are multiple countries and "USA" is one of them...
There must be an expression in the filter that will be able to search through all the values in the string and return me my correct results.
The matrix that i have contains null values and is creating empty rows. I tried grouping the row and then setting the visible property, but that just hides the entire rows. Is there an expression that i would need to ensure that only the null rows are not visible on the matrix?
Thanks for taking the time to read.
The database tables looks like:
Month Sales Product ---------------- ---------- -------------------- August 2007 700.00 Apples August 2007 400.00 Oranges September 2007 380.00 Apples October 2007 1200.00 Oranges November 2007 NULL NULL December 2007 NULL NULL Jan 2008 400.00 Grapefruit
The matrix looks like: August 2007 Sept 2007 Oct 2007 Nov 2007 Dec 2007 Jan 2008 Apples 700.00 380.00 Oranges 400.00 1200.00
I have a DTSX package which reads values from a fixed-length text file using a data reader and writes some of the column values from the file to an Oracle table. We have used this DTSX several times without incident but recently the process started inserting NULL values for some of the columns when there was a valid value in the source file. If we extract some of the rows from the source file into a smaller file (i.e 10 rows which incorrectly returned NULLs) and run them through the same package they write the correct values to the table, but running the complete file again results in the NULL values error. As well, if we rerun the same file multiple times the incidence of NULL values varies slightly and does not always seem to impact the same rows. I tried outputting data to a log file to see if I can determine what happens and no error messages are returned but it seems to be the case that the NULL values occur after pulling in the data via a Data Reader. Has anyone seen anything like this before or does anyone have a suggestion on how to try and get some additional debugging information around this error?
This provides a good example for my situation. In this example, you will see a Movie dimension with four attributes; Genre, Language, Movie, and Theme. I have a similar setup except mine is Top Level Hierarchy>Categories>Values which are all under the one hierarchy.
My Question: I have the dimension setup as a multi-value parameter in one of my reports. When I filter on a value in Genre and in Language, it provides all values from that genre and all values from that language. I really only want the values that include both.
If I filter on Western and English, I get Movie1-5 when all I really want is Movie2 only. Is there any way to have this do an Intersect within the same dimension or do I have to build each one out into its own dimension?
In a table I have some rows with flag A & B for a scode, some scode with only A and some are only B flags.
I would like to fetch all rows with flag A when both flags are present, no rows with B should be fetched. Fetch all rows when only single flags are present for a scode.How to achieve this using TSQL code.
Hi! I have table with complex index on 5 fields. One of them is string filed. I want to implement some sort of filtering, by setting SetRange() in my SQLCeCommand. But i need to fileter only by one string field and to get the values starting with the input string value. I tried to use such code: ... command.SetRange(DbRangeOptions.Prefix, new object[] {null, null, null, "Com", null}, null); resultSet = cmd.ExecuteResultSet(ResultSetOptions.Scrollable); .... But it doesn't work. As a result i've got an empty result set. Usage of simple index on one field and setting the correspondent range will solve problem, but i can't have such index due to project restrictions. Is there any way to set prefix range only by one value of complex index? If not, please, explain me how does Prefix Range works.
I have SQL Server 2012 SSIS. I have Excel source and OLE DB Destination.I have problem with importing CustomerSales column.CustomerSales values like 1000.00,2000.10,3000.30,NotAvailable.So I have decimal values and nvarchar mixed in on Excel column. This is requirement for solution.However SSIS reads only numeric values correctly and nvarchar values are set as Null. Why?
CREATE TABLE [dbo].[Import_CustomerSales]( Â [CustomerId] [nvarchar](50) NULL, Â [CustomeName] [nvarchar](50) NULL, Â [CustomerSales] [nvarchar](50) NULL ) ON [PRIMARY]
can somebody explain me how I can assign a NULL value to a datetime type field in the script transformation editor in a data flow task. In the script hereunder, Row.Datum1_IsNull is true, but still Row.OutputDatum1 will be assigned a value '0001-01-01' which generates an error (not a valid datetime). All alternatives known to me (CDate("") or Convert.ToDateTime("") or Convert.ToDateTime(System.DBNull.Value)) were not successful. Leaving out the ELSE clause generates following error: Error: Year, Month, and Day parameters describe an un-representable DateTime.