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IDS Forum

Re: Stored Procedure Returning Record Set and colu

Posted By: Norton, Graeme
Date: Saturday, 1 August 2009, at 10:24 a.m.

In Response To: Stored Procedure Returning Record Set and column n (MIKE CADDY)

You can name the returning variables like:

RETURNING integer AS LinkId,

Varchar(255) AS LinkUrl,

VARCHAR(255) AS LinkDesc

Not sure if C# will recognise these but web services and SSRS do
--------------------------
Cheers Graeme

Graeme Norton | Senior Solution Architect | Channels Technology - Technology | ITV plc
Television Centre, Kirkstall Road | Leeds | LS3 1JS | Tel: 0113 222 7157 | Mob: 07764 256655 | Graeme.Norton@ITV.COM

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Please consider the environment before printing this email

----- Original Message -----

From: ids-bounces@iiug.org <ids-bounces@iiug.org>
To: ids@iiug.org <ids@iiug.org>
Sent: Sat Aug 01 14:21:01 2009
Subject: Stored Procedure Returning Record Set and column n [16551]

In SQL Server I can create a procedure that would select all rows matching an
input parameter, for example:-

CREATE PROCEDURE [dbo].[GetLinks] @UserId int AS
BEGIN

SELECT LinkId, LinkUrl, LinkDesc FROM Links WHERE UserId = @UserId
END

Then from C# I can call

SqlDataReader rs = linkCmd.ExcuteReader();

int LinkDescriptionOrdinal = rs.GetOrdinal("LinkDesc");
int LinkUrlOrdinal = rs.GetOrdinal("LinkUrl");

while (rs.Read)
{

string links += string.Format("<a href=\"{0}\">{1}</a> ",
rs.GetString(LinkUrlOrdinal), rs.GetString(LinkDescriptionOrdinal));
}

or from an ASPX Eval's

<asp:HyperLink runat="server" NavligateUrl='<%# Eval("LinkUrl")%>' Text='<%#
Eval("LinkDesc")%>'/>

However I've now got to do the same against an Informix Table, I've been told
that the syntax should be:-

CREATE FUNCTION GetLinks ( userId integer ) RETURNING integer, char(255),
char(255)

DEFINE linkId integer;

DEFINE linkUrl char(255);

DEFINE linkDesc char(255);

FOREACH cursor1 FOR

SELECT LinkId, LinkUrl, LinkDesc

INTO linkId, linkUrl, linkDesc

FROM Links

WHERE UserId = userId

RETURN linkId, linkUrl, linkDesc WITH RESUME;

END FOREACH;
END FUNCTION;

This seems to work, albeit very ugly and verbose, I get the data I need
however using this I'm not able to reference the Column name? All that is
available is:-

IfxDataReader rs = linkCmd.ExcuteReader();
while (rs.Read)
{

string links += string.Format("<a href=\"{0}\">{1}</a> ", rs.GetString(1),
rs.GetString(2));
}

or from an ASPX Eval's

<asp:HyperLink runat="server" NavligateUrl='<%# Eval("Column1")%>' Text='<%#
Eval("Column2")%>'/>

Is this the only way to return data from Informix?

It makes the code very unreadable, and if someone changes the order of the
call or adds a column in the middle everything breaks.

I'm hope someone can help, although from what I've seen so far whilst working
with Informix I'm not expecting anything.

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