Optional Relationship

Dec 18, 2006

Hi, how can i make optional relationship?

for example: In table A, there is column 1, column 2, column3. In table B, there is column 4, column 5 and column 6.

 column 1 and column 2 are primary keys for table A and table B. The relationships between table A and table B are column 2 and column 5; column3 and column 6. but optional (ie. when data exists in column 2, then column3 is null)

 how can i set the relationship? because one of the columns data is null each time, error always occurs.

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How Can I Create A One-to-one Relationship In A SQL Server Management Studio Express Relationship Diagram?

Mar 25, 2006

How can I create a one-to-one relationship in a SQL Server Management Studio Express Relationship diagram?

For example:
I have 2 tables, tbl1 and tbl2.

tbl1 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}

tbl2 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl1_id {uniqueidentifier} as FK linked to tbl1.id


If I drag and drop the tbl1.id column to tbl2 I end up with a one-to-many relationship. How do I create a one-to-one relationship instead?

mradlmaier

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Oct 14, 2015

I have four tables with relationships as shown. They have a circular relationship and so one of the relationships is forced to be inactive.

   Operation (Commodity, OperationKey)   ==========> 
Commodity (Commodity)
                      /                                                                        
/
                       |                                                                         
|
   Advice (OperationKey)       ====== (inactive)=======>
Operation Commmodity (Commodity, OperationKey)

I have the following measure:

Advice No. Commodity:=CALCULATE (
COUNTROWS ( 'Advice' ),
USERELATIONSHIP(Advice[OperationKey],'Operation Commodity'[OperationKey]),
operation
)

However, the userelationship function does not override the active relationship between Operation & Advice and so the measure is limited to Advices directly filtered by the Operation table.

If I delete the relationship between Operation and Advice, then the measure works as expected i.e. Operation indirectly filters Operation Commodity which filters Advice.

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Nov 27, 2004

I have a select proc that will take a bunch or criteria parameters. Based on how many are not null I would like to decide how many inner joins to do.
for example:

select H1.Priceid as HotelPriceId,H2.Priceid as AirPriceId, H1.VendorPackageId from
(
select HA.PriceId, HA.VendorPackageId from Criteria HA Inner Join
(
select VendorPackageId from ValidVendorPackages
where Vendor = 'SBT'
and Sitecode = 'system'
and PackageType = 'AHCF'
)HB on HA.VendorPackageId = HB.VendorPackageId
and
(
CriteriaId in
(
select CriteriaID from ValidItemCriteria
where Destination = 'LAS'
and LengthOfStay = 5
and Ages = 'A2'
and ComponentType = @ComponentType_1
and ValidItemType = @ValidItemType_1
and ItemValue = @ItemValue_1
)
)

)H1 INNER JOIN
(
select HA.PriceId, HA.VendorPackageId from Criteria HA Inner Join
(
select VendorPackageId from ValidVendorPackages
where Vendor = 'SBT'
and Sitecode = 'system'
and PackageType = 'AHCF'
)HB on HA.VendorPackageId = HB.VendorPackageId
and
(
CriteriaId in
(
select CriteriaID from ValidItemCriteria
where Destination = 'LAS'
and LengthOfStay = 5
and Ages = 'A2'
and ComponentType = @ComponentType_2
and ValidItemType = @ValidItemType_2
and ItemValue = @ItemValue_2
)
)
)H2 on H1.Priceid = H2.priceId Inner Join
(
select HA.PriceId, HA.VendorPackageId from Criteria HA Inner Join
(
select VendorPackageId from ValidVendorPackages
where Vendor = 'SBT'
and Sitecode = 'system'
and PackageType = 'AHCF'
)HB on HA.VendorPackageId = HB.VendorPackageId
and
(
CriteriaId in
(
select CriteriaID from ValidItemCriteria
where Destination = 'LAS'
and LengthOfStay = 5
and Ages = 'A2'
and ComponentType = @ComponentType_3
and ValidItemType = @ValidItemType_3
and ItemValue = @ItemValue_3
)
)
)H3 on H2.Priceid = H3.priceId

if values are only passed in from @ComponentType_1,@ValidItemType_1,@ItemValue_1 I dont want to do any inner joins.

If its passed in for @ComponentType_1,@ValidItemType_1,@ItemValue_1 & @ComponentType_2,@ValidItemType_2,@ItemValue_2 I want to do the first Inner Join.

and of course if I get all 3 sets of criteria I want to do both the inner joins.
I know I can cut and past this thing 3 times with an if statement but that isn't going to be practical.

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May 5, 2004

I have a SP with many parameters. If not supplied, parameter default value is NULL.

The parameters are to be used in the WHERE clause:

ALTER PROCEDURE dbo.SearchFlight

(
@DepartureDate datetime = null,
@ReturnDate datetime= null,
@MaxPrice money= null,
@Country int= null,

)

AS
SELECT *
FROM myTables with joint
WHERE
DepartureDate = @DepartureDate
AND ReturnDate = @ReturnDate
AND MaxPrice = @MaxPrice
AND Country = @Country

If a parameter is null, I dont want it to be in the WHERE clause.
I dont want to use a string parameter and execute a "string" select.
I dont want to use a combination of IF to check everything ...

Is ther a solution ? using Case statement ???

Thanks for your help

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Sep 15, 2005

Is there an option in a stored procedure whereby a parameter can be flagged as optional? I have a stored procedure with 2 parameters, Product and Date, and I would like to be able to just pass the Product, or pass Product and Date from an Access project. Is this possible?

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Apr 13, 2006

Hello,
Is it possible to define optional parameters for a stored procedure?
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thx.

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Jul 20, 2007

Hello everyone.



I have a package in DTS that I am tryinig to work with. We have a few queries that will export the same exact table to a text file. I am trying to make it so we can pull a previously created text file from a central "CommonFile" folder. In this package I have a Execute Package Task. This second package is only for creating this common txt file. I want this step to only run if the file is non-existant (i.e. someone deleted/moved it by accident) or if it is over a week old (the database we pull it from it updated on sundays). I can run it so the comment txt file get created first thing on monday, but I still want a failsafe in there incase the file is deleted/moved or the package to create it fails.



I have an ActiveX script set up which checks if the file exists and if it does then checks to see how old it is Then from there I would like to jump to a different area of my package:




Code Snippet

Dim pkg
Dim stpbegin

Set objFSO = CreateObject("Scripting.FileSystemObject")

If objFSO.FileExists(".txt") = TRUE THEN
msgbox("COPY")
Set objFile = objFSO.GetFile(".txt")

Dim today
Dim thisweek

today = date()
thisweek = (Weekday(date())-2)

IF thisweek < 0 THEN thisweek = 6 'Sunday Weekday() = 1 so this will put it at the end of the week.

IF (date() - thisweek) <= objFile.DateLastModified THEN
msgbox("COPY")
set pkg = DTSGlobalVariables.Parent
set stpbegin = pkg.Steps("DTSStep_DTSActiveScriptTask_4")
stpbegin.ExecutionStatus = DTSStepExecStat_Waiting
ELSE
msgbox("CREATE")
set pkg = DTSGlobalVariables.Parent
set stpbegin = pkg.Steps("DTSStep_DTSExecutePackageTask_1")
stpbegin.ExecutionStatus = DTSStepExecStat_Waiting
END IF

ELSE
msgbox("CREATE")
set pkg = DTSGlobalVariables.Parent
set stpbegin = pkg.Steps("DTSStep_DTSExecutePackageTask_1")
stpbegin.ExecutionStatus = DTSStepExecStat_Waiting
END IF

Main = DTSTaskExecResult_Success
End Function





The problem I am having is despite the ActiveX script the package will run the execute package task no matter what (i dont see a way to post pics so I will try to draw bellow). I think this is due to me having a success between the ActiveX and the EPT. This is the only way I know of how to step this up. If i do a completion it will also do the EPT and if I do a failure it won't do anything at all after it.



DTSActiveScriptTask_3 (from above) --> success --> DTSExecutePackageTask_1 --> success --> DTSActiveScriptTask_4



So basically I want this pagage to jump over the DTSExecutePackageTask_1 if the file checks out as okay. Does anyone have a suggestion of how I can set up this package?



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Nov 26, 2007

I'm using an application that is generating some SQL scripts for SQL Server 2005. I'm trying tweak it so that I can run it on SQL Server 2000.

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I understand this keyword, when used in SQL Server 2005, let's the script continue and complete when errors are detected.

What is the alternative syntax to use in SQL Server 2000?

Thanks,
-Q

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Apr 17, 2008

Hi, I'm having a problem trying to do optional items in where clause. I'd appreciate some help, heres the code.

select DFD.Col1 as 'Col1',CMD.Col2 as 'Col2'
from Control as DFD,MetaData as
CMD,Columns as DC,Tables as DT
where DFD.GroupID in
({0}) and

(CMD.MetaDataId = DFD.PrimaryID --
or CMD.MetaDataId = DFD.ForeignID -- These are the problem 3 lines
or CMD.MetaDataId=DFD.HumanColumn) --

and DFD.Disabled='N' and CMD.Disabled='N' and DC.ColumnsId=CMD.ColumnId
and DC.Disabled='N' and DT.TablesId=DC.TableID and DT.Disabled='N'



-- For the problem rows I need to be able to optionally search if they're = to MetaDataID. Right now this query will return only rows that have metadataid = PrimaryID or Foreign, Human. I need to be able to return all rows with the optional dependancies.

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Thanks for any help,

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For those of you without formal SQL training, know this: You have to normalize your database. This is part of the process of database development. You can not just whack together a few tables in whatever way is the easiest for the problem at hand, because eventually your requirements will expand and then you need your data to be flexible.

Seriously, in the last 3 weeks I've seen many many questions where it is obvious that the problem is a flawed DB design, but all the so-called SQL gurus here will just answer the question without addressing the fact that the problem lies much deeper.

Here's a link I found on Google:
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I need some help...
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Run-Time Error '-2147217887 (80040e21)':

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Here is the code:
Public Function D2L(sconnect As Variant, dDate As Variant) As Variant
Dim rsDate As ADODB.Recordset
Dim cmdDate As ADODB.Command
Dim prmDate As ADODB.Parameter

Set cmdDate = New ADODB.Command
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ADOConn.Open sconnect

Set cmdDate.ActiveConnection = ADOConn
cmdDate.CommandText = "dbo.UP_CVRT_DATE_TO_LONG"
cmdDate.CommandType = adCmdStoredProc

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prmDate.Type = adDate
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cmdDate.Parameters.Append prmDate

Set rsDate = cmdDate.Execute()

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Hello guys,
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and vice versa for female.
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GO
--
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I'm looking for opinions here:

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3) @Param2 char(3),
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)

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1 2 3 4
/ x x x
x / x x
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thank you

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Currently we use the OR approach and I wanted to see if anyone had any thoughts before switching to using IsNull, which seems a bit better.

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Nov 8, 2007

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a.)
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Jun 11, 2007

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here is some code that I am using my stored procs





Code Snippet
For Regions
SP1
Create Proc... spGetRegions
Begin...




Select RegionID, RegionName From Region

Order By RegionName
End








Code Snippet

For Countries

SP2

Create Procedure dbo.spGetCountries

@RegionID int = NULL,

AS

Begin

Select CountryID, CountryName From Country C

WHERE C.RegionID = CASE WHEN @RegionID is null THEN C.RegionID ELSE

@RegionID END

ORDER BY C.CountryName

END









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Jun 17, 2008

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ON SC.subCategoryID = SU.subCategoryID
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Hello Group
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Dim SQL_SL As String = "SELECT * FROM BuildZone" & _
" WHERE Parcel = '" & strPercelS & "'" & _
" ORDER BY Parcel Asc" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldNameLast = '" & strNameLastS & "'" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldDateMonth = " & intDateYearS & "" & _
" AND fldDateYear = " & intDateYearS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
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" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldPermitNum = " & intPermitS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldStructureType = " & intStructureTypeS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldConstructionCost >= " & intCCost1S & "" & _
" AND fldConstructionCost <= " & intCCost2S & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldRange = " & intRangeS & "" & _
" AND fldTownship = " & intTownshipS & "" & _
" AND fldSection = " & intSectionS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldZoningDistricts = " & intZoneS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldTwsp = " & intTwspS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldRWD = " & intRWDS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldWW = " & intWWS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldAccessApplic = " & intAccessAppS & ""

Thanks

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Dec 5, 2005

Hi, I'm having some issues with the SqlDataSource. I want to use it
to
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results.

This is what I have right now (hopefully haven't made any typos
- can't
copy/paste):

<asp:SqlDataSource ID="test1" runat="server"
SelectCommand="SELECT * FROM
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@MyParam) ORDER BY
SomeColumn" ConnectionString="<%
ConnectionStrings:MyConnString %>" >
<SelectParameters>
 
<asp:ControlParameter Name="MyParam"
ControlID="DropDownList1"
PropertyName="SelectedValue" Type="String"
ConvertEmptyStringToNull="True"
DefaultValue=""
/>
</SelectParameters>
</asp:SqlDataSource>

<asp:DropDownList
ID="DropDownList1" runat="server" AutoPostBack="True">
  <asp:ListItem
Selected="True" Value="">All</asp:ListItem>
 
<asp:ListItem>AnotherValue</asp:ListItem>
 
<asp:ListItem>SomeElse</asp:ListItem>
 
<asp:ListItem>Whatever</asp:ListItem>
</asp:DropDownList>

<asp:GridView
ID="GV" runat="server" DataSourceID="test1"
AutoGenerateColumns="False"
DataKeyNames="SomeID"
  <columns>
    <asp:BoundField
DataField="SomeColumn" HeaderText="A Title"
SortExpression="SomeColumn"
/>
   (more bound columns here...)
 
</columns>
</asp:GridView>

When I test the SQL query in
the query designer it works (returns only rows
having the value passed as a
parameter when one is specified, otherwise it
returns all rows), so it seems
like that part is OK. The "All" (as in
"return all"/no filtering) entry in
the DropDownList has a value of a zero
lenght string, and the
ControlParameter has the convert empty string to null
to true (and the
default value is the same), so it should get converted to a
null when "All"
is selected, hence returning all rows. But it doesn't work.
It works fine for
all the entries with text, but the zero lenght string
somehow doesn't work -
I get no results at all instead of it returning all
rows (but the query
itself worked fine when I tested it).

What am I missing? I just can't
find what I'm doing wrong. Any ideas/hints?
(I also need to do the same with
an ObjectDataSource, so hopefully I can get
this to work!) I can't think of
an easy way to find out if the zero lenght
string gets converted to a null or
not (I've even tried adding OR @MyParam =
'' to the query and it still didn't
work....) Right now I'm stuck....

(Also posted this question on microsoft.public.dotnet.framework.adonet newsgroup)

Thanks a lot in advance for the
replies!

Carl B.

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