Hi any one can explain below Subroutine. original subroutine has only one argument but i need to pass two argument to below stored procedure. original way of calling Sub is ExecStoredProcedureArg1("pr_CustomForPV", $AutoNumber, "IsCustom") I have changed the sub to like ExecStoredProcedureArg1("pr_CustomForPV", "$VersionID,$AutoNumber", "IsCustom"). it is still working fine. my question is how the sub is working with two parameters and please explain subroutine what is qq.what is fetch row? what i need to learn to understand this subroutine.

if  (0 != ExecStoredProcedureArg1("pr_CustomForPV", "$VersionID,$AutoN
+umber", "IsCustom"))

{
   # Do some thing
}



sub ExecStoredProcedureArg1($$$)
{
    writelog(info,"Entering ExecStoredProcedureArg1() : ====");
    my ($strStoredProc,$strArg, $strResultField) = @_;

    my $strResultValue = "";

    my $mydb = Win32::ODBC->new($DSN);
    if (!$mydb)
    {
        Win32::ODBC::DumpError();
        writelog(logdie,"Failed to connect to $DB_SERVER!");
    }

    my $sql = qq|$strStoredProc $strArg|;

    if ($mydb->Sql($sql))
    {
        Win32::ODBC::DumpError();
    }
    if ($mydb->FetchRow())
    {
        %DataSet = $mydb->DataHash();
        $strResultValue = $DataSet{$strResultField};
    }
    else
    {
        writelog(info,"No row found for $strResultField");
        $mydb->Close();
    }
    $mydb->Close();

    writelog(info,"$strStoredProc $strArg for $strResultField:  value 
+= $strResultValue");

    writelog(info,"Exiting ExecStoredProcedureArg1() : ====");
    return $strResultValue;
}

[download]
stored procedure: In the below procedure i have added @number parameter.original stored procedure has only one parameter 
CREATE PROCEDURE dbo.pr_CustomForPV
(
    @VersionID int,
    @Number int
)
AS



SELECT
CASE
    WHEN U.SourceFileName IS NOT NULL Then 1
    ELSE 0
END AS IsCustom
# some joins

[download]

In reply to Calling Stored procedure from perl by mtrasp

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