Question

I’ve got a SQL query running a FULL JOIN on multiple database tables. The query is dynamic based on user input but for the example I just included some possible inputs.

This issue I’m having is I need to filter by multiple date ranges and return the query results if they fall within either date range.

The query as I have now is:

SELECT rank=COUNT(*)
   FROM    [LOM].[dbo].[lom_problem] problem
       FULL JOIN [LOM].[dbo].[lom_batch] batch on problem.lom_number = batch.lom_number
       FULL JOIN [LOM].[dbo].[lom_specimen] specimen on problem.lom_number = specimen.lom_number
       FULL JOIN [LOM].[dbo].[Main_LOM_Form] main on problem.lom_number = main.lom_number
           WHERE problem.problem = '102' AND batch.batch IS NULL AND main.practice_code IN('HPMR', 'DOCTORs2')
           AND main.occurrence_date >=Convert(datetime,'01/04/2012') AND main.occurrence_date <= Convert(datetime,'01/05/2012')
           OR main.received_date>=Convert(datetime,'01/04/2012') AND main.received_date <= Convert(datetime,'01/05/2012')

However, the query returns the results as if my query was the SUM of

SELECT rank=COUNT(*)
   FROM    [LOM].[dbo].[lom_problem] problem
       FULL JOIN [LOM].[dbo].[lom_batch] batch on problem.lom_number = batch.lom_number
       FULL JOIN [LOM].[dbo].[lom_specimen] specimen on problem.lom_number = specimen.lom_number
       FULL JOIN [LOM].[dbo].[Main_LOM_Form] main on problem.lom_number = main.lom_number
           WHERE problem.problem = '102' AND batch.batch IS NULL AND main.practice_code IN('HPMR', 'DOCTORs2')
   AND main.occurrence_date >=Convert(datetime,'01/04/2012') AND main.occurrence_date <= Convert(datetime,'01/05/2012')

and

SELECT rank=COUNT(*)
   FROM    [LOM].[dbo].[lom_problem] problem
       FULL JOIN [LOM].[dbo].[lom_batch] batch on problem.lom_number = batch.lom_number
       FULL JOIN [LOM].[dbo].[lom_specimen] specimen on problem.lom_number = specimen.lom_number
       FULL JOIN [LOM].[dbo].[Main_LOM_Form] main on problem.lom_number = main.lom_number
           WHERE main.received_date>=Convert(datetime,'01/04/2012') AND main.received_date <= Convert(datetime,'01/05/2012')

How do I get the query to return the results with this part intact:

SELECT rank=COUNT(*)
   FROM    [LOM].[dbo].[lom_problem] problem
       FULL JOIN [LOM].[dbo].[lom_batch] batch on problem.lom_number = batch.lom_number
       FULL JOIN [LOM].[dbo].[lom_specimen] specimen on problem.lom_number = specimen.lom_number
       FULL JOIN [LOM].[dbo].[Main_LOM_Form] main on problem.lom_number = main.lom_number
           WHERE problem.problem = '102' AND batch.batch IS NULL AND main.practice_code IN('HPMR', 'DOCTORs2')

plus the filtering for either date range on top of that:

           AND main.occurrence_date >=Convert(datetime,'01/04/2012') AND main.occurrence_date <= Convert(datetime,'01/05/2012')
           OR main.received_date>=Convert(datetime,'01/04/2012') AND main.received_date <= Convert(datetime,'01/05/2012')

Thanks!

Edit:
I need to filter based on a data range of main.occurrence_date and main.received_date. If the data range is present in either one or the other column, I need to return the count. However, the query as I have now returns the sum of the first part of the where statement and then the results from the second part (after OR). I thought it may have been just a syntax/formatting issue but was unsure.

Answer 1

Don’t forget your parenthesis:

       WHERE problem.problem = '102' AND batch.batch IS NULL AND main.practice_code IN('HPMR', 'DOCTORs2')
       AND ((main.occurrence_date >=Convert(datetime,'01/04/2012') AND main.occurrence_date <= Convert(datetime,'01/05/2012'))
       OR (main.received_date>=Convert(datetime,'01/04/2012') AND main.received_date <= Convert(datetime,'01/05/2012'))

EDIT: OK, let’s try again. I believe acermate433s’ suggestion would make it more readable:

       WHERE problem.problem = '102' AND batch.batch IS NULL AND main.practice_code IN('HPMR', 'DOCTORs2')
       AND (main.occurrence_date BETWEEN Convert(datetime,'01/04/2012') AND Convert(datetime,'01/05/2012'))
       OR (main.received_date BETWEEN Convert(datetime,'01/04/2012') AND Convert(datetime,'01/05/2012'))

Is this what you had in mind? It would count all records that have occurance_date in the specified range and all records that have received_date in the specified range, without counting them twice.