Optional Parameter In Sql Query

Nov 6, 2005

Hi All,

I have a stored proc which looks like this.

Create ....
(
@id int,
@ud int,
@td int=0
)

if @td=0
select bkah from asdf where id=@id and ud=@ud
else
select bkah from asdf where id=@id and ud=@ud and td=@td

---------------------------------
I am wondering if i could replace if condition with the following line

select bkah from asdf where id=@id and ud=@ud
and ( @td<>0 and td>@td )

IS sql server 2000 smart enough not to use the td>@td in the query if
@td is 0


Thanks all

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Help With Optional Parameter Query With IN Statements

Aug 24, 2007

I have a query with 17 separate, optional, parameters. I have declared each parameter = NULL so that I can test for NULL in the case that the user didn€™t not pass in the parameter.

I am new enough to SQL Server that I am having difficulty building the WHERE clause with all of these optional parameters.

One solution I was advised on by a well paid SQL programmer, was to use a string in the stored proc and dynamically build the WHERE clause and exec it at the end of the sp. But the whole point of a stored proc is that it can be compiled and cached to make it faster, yet the string approach makes it have to compile every time it€™s run! Not a good solution, but maybe it€™s the best I can do . . .

I have tried many different approaches using different functions, etc. but I€™ve hit a brick wall. Any help in sorting it out with YOUR techniques would be greatly appreciated:

1. To add the parameter to the WHERE clause and test for NULL I€™ve used the COALESCE function such as €œWHERE table.fieldname = COALESCE(@Param, table.fieldname)€?. This works well if there is only one item in the parameter, but in the case that I pass multiple items to the parameter, it completely fails.

2. To handle multiple items, for example, if @Param = €˜3,7,98€™ (essentially, a csv separated list of keys)

Code SnippetWHERE table.fieldname IN(COALESCE(@Param, table.fieldname))


doesn€™t work because @Param needs to be parsed from a string into an array of integers in the parameter. So, I am using a UDF I discovered to parse the multi-item parameter. The UDF can be found at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsqlmag01/html/TreatYourself.asp and it returns a table variable that can be used in an IN statement. So I€™m using


Code SnippetISNULL(table.fieldname, 0) IN (SELECT value FROM dbo.fn_Split(@Param,€™,€™))



which works brilliantly in my WHERE statement AS LONG AS @Param ISN€™T NULL. So how do I test for NULL first and still use this approach to multi-item parameters?

I€™ve tried


Code SnippetWHERE @Param IS NULL OR ISNULL(table.fieldname, 0) IN (SELECT value FROM dbo.fn_Split(@Param,€™,€™))


and though it works, the OR causes it to slow way down as it compares every record for the OR. (It slows down by approximately 800%.) The other thing I tried was


Code SnippetISNULL (table.fieldname, 0) IN (CASE WHEN @Param IS NULL THEN ISNULL(table.fieldname, 0) ELSE (SELECT value FROM dbo.fn_Split(@Param,€™,€™)))



This fails with €œSubquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression€? due to the multiple values in the parameter. (I can€™t understand why the line without the CASE statement works, but the CASE line doesn€™t!)

Am I even on the right track, cuz this is driving me mad and I just need a way to deal with optional multi-item parameters in an IN statement? HELP!








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Apr 13, 2006

Hello,
Is it possible to define optional parameters for a stored procedure?
What I want is to create a search with about 8 parameters, but most users will only use 3 or 4, so It would be nice If I could only provide the used parameters in my code. And have sql give the unused parameters a default value (possibly %)
thx.

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Thanks for any help,

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Dec 5, 2005

Hi, I'm having some issues with the SqlDataSource. I want to use it
to
populate a GridView, but using an optional parameter to filter the
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
SomeTable WHERE (@MyParam IS NULL OR MyColumn =
@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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Hello,



I want to use an optional parameter at the command line for my package.

I planned to make the first task a script which simply checks the variable (which is a string), and if it is empty, go one way, and if it is not, go another way. Is the best to go?



Many thnaks in advane

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Hello,

my problem is that i have a integer report parameter that must be multivalued. The parameter is populated by query. The thing is that in the beginning, there is no data in the dataset of the specific parameter. The table which is source to the dataset will br populated after some time from an XML.





Reporting services prompts the user to select a value for the parameter. But there is no value to select, yet. I cannot have leave blank because it is a string and not an int and i cannot have null because the parameter is multivalued. Any suggestions?





Thank you for your time and help!





/luskan

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[code]...

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Hello Group
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Dim SQL_SL As String = "SELECT * FROM BuildZone" & _
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" SQL_SL As String = SELECT * FROM BuildZone" & _
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" UNION" & _
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" UNION" & _
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" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldPermitNum = " & intPermitS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
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" UNION" & _
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" WHERE fldConstructionCost >= " & intCCost1S & "" & _
" AND fldConstructionCost <= " & intCCost2S & "" & _
" UNION" & _
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" AND fldTownship = " & intTownshipS & "" & _
" AND fldSection = " & intSectionS & "" & _
" UNION" & _
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" WHERE fldZoningDistricts = " & intZoneS & "" & _
" UNION" & _
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" WHERE fldTwsp = " & intTwspS & "" & _
" UNION" & _
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" UNION" & _
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" WHERE fldWW = " & intWWS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldAccessApplic = " & intAccessAppS & ""

Thanks

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Jun 12, 2006

I need to create a stored procedure that will search some tables.

The stored procedure will be passed some parameters that may or may not have a value.

I have googled the best way to do this.
I found this post as an example: Optional Search Parameters

and also found this example : Optional Parameters in T-sQL

I am trying to figure out the best way to do this.

In the past I would build a dynamic query like the following.


SQL Code:






Original
- SQL Code




CREATE PROCEDURE [dbo].[Search_Results]

@SUBCITY VarChar(100) = 'Any'

AS

------------------------------------------------------------------------------------------------------
Declare @SUBCITYString Varchar(200)
If @SUBCITY <> 'Any'
Begin
Set @SUBCITYString = ' AND (Table1.SUBCITY LIKE ''' + @SUBCITY + '%'') '
End
Else
Begin
Set @SUBCITYString = ''
End
-----------------------------------------------------------------------------------------------------

Declare @SQLString As Varchar(500)
Set @SQLString = 'SELECT*

FROMTable1

WHERE Table1.ID IS NOT NULL
' + @SUBCITYString + '

ORDER BY Column ASC'

Execute (@SQLString)

GO






CREATE PROCEDURE [dbo].[Search_Results]  @SUBCITY VarChar(100) = 'Any' AS ------------------------------------------------------------------------------------------------------DECLARE @SUBCITYString Varchar(200)IF @SUBCITY <> 'Any' BEGIN  SET @SUBCITYString = ' AND (Table1.SUBCITY  LIKE ''' + @SUBCITY + '%'') 'ENDELSE BEGIN SET @SUBCITYString = '' END----------------------------------------------------------------------------------------------------- DECLARE @SQLString AS Varchar(500)SET @SQLString = '  SELECT    *                            FROM  Table1               WHERE  Table1.ID IS NOT NULL                ' + @SUBCITYString +  '            ORDER BY Column ASC' Execute (@SQLString) GO


However this is really cumbersome to create and is not fun debugging!

Does one of these ways have an advantage over the other? Or is there another way to do this?

Thank you!

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(
(STATE = @STATE and LOB =@LOB and COMPANY=@COMPANY)--Condition 1
OR
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OR
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OR
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Nov 27, 2004

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

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END IF

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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.



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The key word "(optional)" is causing trouble.
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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 --
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or CMD.MetaDataId=DFD.HumanColumn) --

and DFD.Disabled='N' and CMD.Disabled='N' and DC.ColumnsId=CMD.ColumnId
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I'm trying to execute a stored procedure and I'm getting this message

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[Microsoft][ODBC SQL Server Driver]Optional feature not implemented

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
Set ADOConn = New ADODB.Connection

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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Hello guys,
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If i want to choose all records that are male, I could simply have a query like this :
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--
In such prc. i can only get rows with a where clause. What if i want to use the same procedure with all rows and omiting where. I have many fields like this and I m unsure if I should use a text query or not ...
Thanks for all of u from now on

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Dealing With Optional Variables

Jan 23, 2004

I'm looking for opinions here:

I have a stored procedure that has one required variable, and two optional variables, like this:

CREATE PROCEDURE sp_tariff_rule
@tariff_id INT,
@start_date DATETIME = NULL,
@end_date DATETIME = NULL
...etc...

I want the procedure to process
1) all data is no dates are presented
2) all data after the start date, if no end date is supplied
3) all data before the end date if no start date is supplied
4) all data between the start and end dates if both are supplied

Now, instead of an elaborate conditional, I added this to the WHERE clause of my SQL statement:

AND ((@start_date IS NULL OR service_date >= @start_date) AND (@end_date IS NULL OR service_date <= @end_date))

It works fine, but I want to know if anyone has a different/better way of doing it, or if there is a big bug waiting to happen here.

I typically don't like to create multipurpose routines in my code, but this is a better approach for my in a non-object-oriented world of SQL.

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Function With Optional Parameters

Jan 19, 2008

Hi, I wish to create a user defined funtion in sqlserver2005 with optional parameter list. So at the time of function calling the parameters should be a optional one. How can i do this? please help me .

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Dynamic Optional Parameters

Feb 13, 2008

Good day,

I have an issue on constructing dynamic WHERE conditions that use OPTIONAL parameters.

SP_SOMETHING (
1) @DateFrom datetime,
@DateTo datetime,
2) @Param1 char(8),
3) @Param2 char(3),
4) @Param3 tinyint
)

I would like to use a where clause that can make use of any combination of the 4 parameters (the two dates should be together)

1 2 3 4
/ x x x
x / x x
x x / x where x = not supplied
/ = supplied a value

(and so the list continues)
Can anybody assist me or give me insights on how to go about this complicated WHERE construct without listing all the probable combinations of the supplied parameters in series of IF statements.

thank you

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Unique Key With Optional Field

Jul 23, 2005

Is it possible to have the field as a unique key and a optional one?It is like.. for example, office code has to be unique (cannot beduplicated with the same code) and it could be null too.

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