In your sqlDataProvider file when you create your sql it should be something of the following nature

IF EXISTS (SELECT * FROM SYSOBJECTS WHERE ID = OBJECT_ID(N'{databaseOwner}[{objectQualifier}GetSector]') AND OBJECTPROPERTY(id, N'IsProcedure') = 1)
    DROP PROCEDURE {databaseOwner}[{objectQualifier}GetSector];
GO

CREATE PROCEDURE {databaseOwner}[{objectQualifier}GetSector]
(
    @SectorID int
)
AS
BEGIN

    SELECT
        [SectorID],
        [ModuleID],
        [PortalID],
        [ParentSectorID],
        [Sector]
    FROM
        [{objectQualifier}Sector]
    WHERE
        [SectorID] = @SectorID
END
GO

This will allow both the database owner if it is specified in the web.config and the object qualifier to be inserted into the sql when it is installed into your portals. The other option with this is if you want to run the sql file on your portal, when you login as a super user then in the sql tab on the host menu load the file in the text box and select the script check box. And click the button on the page it will run the sql and place the appropriate tags when it is run from there.