如何从.Net调用Informix存储过程

Question

I have been racking my brain and cannot seem to find an answer to this problem. I know very little about Informix. I have a requirement to call an Informix procedure called getagentstateintervaldata

The parameters and types for the procedure are:

    p_eStartDate, DATETIME
    p_startTime, DATETIME
    p_endTime, DATETIME
    p_rgSelected, SMALLINT
    p_skillSelected, SMALLINT
    p_tmSelected, SMALLINT

I am using IBM Informix ODBC Driver Version 3.70 Visual Studio 2010, VB.Net, .Net Framework 3.5

Here is the code that I am using to fire the procedure.

First the Test Code that I am using to make sure that I can connect to the database and get data. This code works fine and I get data returned in the dtData data table.

    Dim dtData As Data.DataTable = New Data.DataTable
    Dim xQuery As String = ""

    xQuery = "Select *, (t2.EventDateTime + INTERVAL(-6) HOUR TO HOUR) as NewDatTime "
    xQuery += "From Resource as t1 "
    xQuery += "INNER JOIN AgentStateDetail AS t2 ON t2.agentID = t1.resourceID and t1.dateInactive is null  "
    xQuery += "Where t1.ResourceLoginId LIKE '51cserv%' "
    xQuery += "Order By t2.EventDateTime;"

    Dim conn As OdbcConnection = New Odbc.OdbcConnection(sysODBCConnStr)
    conn.ConnectionTimeout = 0

    Dim objCmd As New Odbc.OdbcDataAdapter(xQuery, conn)

    conn.Open()
    'Fill the dataset
    objCmd.Fill(dtData)

    'Close connection
    If conn.State = Data.ConnectionState.Open Then conn.Close()
    conn.Dispose()

Now the code that fires the Informix procedure. This is the one that keeps giving me errors. I don't have any way to connect to the Informix database like MS SQL's Management studio.

    Dim dtData As Data.DataTable = New Data.DataTable
    Dim xQuery As String = ""

    xQuery = "execute procedure getagentstateintervaldata (date('11-01-13'),to_date('12:01:00.00', '%H:%M'),to_date('11:59:59.00', '%H:%M'),1,1,1)"

    Dim conn As OdbcConnection = New Odbc.OdbcConnection(sysODBCConnStr)
    conn.ConnectionTimeout = 0

    Dim objCmd As New Odbc.OdbcDataAdapter(xQuery, conn)

    conn.Open()
    'Fill the dataset
    objCmd.Fill(dtData)

    'Close connection
    If conn.State = Data.ConnectionState.Open Then conn.Close()
    conn.Dispose()

The error that I am getting is:

ERROR [22008] [Informix][Informix ODBC Driver][Informix] A field in a datetime or interval value is incorrect or an illegal operation specified on datetime field.

EDIT - Just to be clear here, my problem is in the Informix procedure call. I dont understand the error(s) that are returning and I am finding very little help for the IBM Informix forums.

Thank you for any help that you all can give me.

Answer 1

Your problem is not related to .NET, but with your SQL. Basically what you're doing is:

execute procedure getagentstateintervaldata (date('11-01-13'),to_date('12:01:00.00', '%H:%M'),to_date('11:59:59.00', '%H:%M'),1,1,1)

I see two issues in this code:

1- If you specify Hours, Minutes, Seconds and Fractions in the first argument to to_date() then you have to use them in the second parameter (%H:%M%S%F). Depending on your engine version, a "." between %S and %F.

2- You're creating a date() from 11-01-13. This may be ambiguous depending on your environment settings (DBDATE environment variable). A better way would be to use MDY()

Hope this helps. Regards