Question

我有一个SQL查询在多个数据库表上运行FULL JOIN。查询是基于用户输入的动态查询，但是对于示例，我只包括一些可能的输入。

我遇到的这个问题是我需要按多个日期范围进行过滤，如果它们属于任一日期范围，则返回查询结果。

我现在的查询是：

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')

但是，查询返回结果，就像我的查询是

的SUM一样

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')

和

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')

如何让查询返回原始部分的结果：

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')

加上对日期范围的过滤：

           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')

谢谢！

编辑：我需要根据main.occurrence_date和main.received_date的数据范围进行过滤。如果数据范围出现在一列或另一列中，我需要返回计数。但是，我现在的查询返回where语句的第一部分的总和，然后返回第二部分的结果（在OR之后）。我认为它可能只是语法/格式问题，但不确定。

Answer 1

不要忘记你的括号：

       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'))

编辑：好的，我们再试一次。我相信acermate433s的建议会让它更具可读性：

       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'))

这是你的想法吗？它将计算所有在指定范围内具有occunce_date的记录以及在指定范围内具有received_date的所有记录，而不计算它们两次。

具有多个日期范围和完全连接的SQL查询

1 个答案: