Subsonic Query Condition A AND ((Condition B AND Condition C) OR (Condition D AND Condition E AND Condition F)

Question

I'm close to pulling out the rest of my hair because I cannot figure out how to do the following T-SQL Query in SubSonic 2.2:

SELECT  SalesRep, Location, InvoiceNumber, PONumber, POReceivedOn, SurgeryDate, Surgeon
FROM    dbo.vSalesRepCommissionGrouped AS vsrcg
WHERE   UserID IN ( 5, 6, 20 )
    AND ( ( SurgeryDate >= '2012-01-01'
            AND SurgeryDate <= '2012-01-31'
          )
          OR ( SurgeryDate >= '2011-12-01'
               AND SurgeryDate <= '2011-12-31'
               AND POReceivedOn >= '2012-01-01'
             )
        )
ORDER BY SurgeryDate ASC

I've tried the following SubSonic Select in at least 10 different ways, but I cannot get it to produce the same results.

new Select("SalesRep, Location, InvoiceNumber, PONumber, POReceivedOn, SurgeryDate, Surgeon")
                    .From(VSalesRepCommissionGrouped.Schema)
                    .WhereExpression("UserID").In(new[] { 5, 6, 20 })
                    .AndExpression("SurgeryDate").IsGreaterThanOrEqualTo(BeginDate).And("SurgeryDate").IsLessThanOrEqualTo(EndDate)
                    .Or("SurgeryDate").IsGreaterThanOrEqualTo(BeginDate.AddMonths(-1)).And("SurgeryDate").IsLessThanOrEqualTo(
                        EndDate.AddMonths(-1)).And("POReceivedOn").IsGreaterThanOrEqualTo(BeginDate).CloseExpression()
                    .OrderAsc("SurgeryDate");

Could someone please point me in the right direction?

Thank you! - Andrew

Answer 1

Actually, you're SubSonic select should be fine, just use a Where instead of a WhereExpression (what SQL do you get?).

I also recommend using the strongly typed columns of SubSonic instead of magic strings - that's one of the advantages of using SubSonic.

Answer 2

Burn me at the stake, but when it gets to this point I usually use an SqlConnection object as pass SQL in direct. I'm not sure that SubSonic 2 is up to these intricacies.

I also don't think that the parentheses you are using in the subsonic query are actually doing anything. They may affect the parse order of the criteria, but not the construction of the final SQL statement (at least, not in sensibly controllable ways).

SubSonic 3 brought the AndAlso operator to simulate parentheses, but even that's pretty crude. LINQ (supported in SubSonic 3) is probably the only way to do this reliably.

Answer 3

I can't test right now but please see if this query works:

new Select("SalesRep, Location, InvoiceNumber, PONumber, POReceivedOn, SurgeryDate, Surgeon")
                    .From(VSalesRepCommissionGrouped.Schema)
                    .WhereExpression("SurgeryDate").IsGreaterThanOrEqualTo(BeginDate)
                              .And("SurgeryDate").IsLessThanOrEqualTo(EndDate)
                     .OrExpression("SurgeryDate").IsGreaterThanOrEqualTo(BeginDate.AddMonths(-1))
                              .And("SurgeryDate").IsLessThanOrEqualTo(EndDate.AddMonths(-1))
                              .And("POReceivedOn").IsGreaterThanOrEqualTo(BeginDate)
                    .AndExpression("UserID").In(new[] { 5, 6, 20 })
                    .OrderAsc("SurgeryDate");