Ms access 使用SET/WHERE语句更新数据

有没有办法使用WHERE语句更新这些记录

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier = '1.35', 
    HRBIQuery.PaySegmentMultiplier = '1.25', HRBIQuery.PaySegmentMultiplier = '1.15',
    HRBIQuery.PaySegmentMultiplier = '.90', HRBIQuery.PaySegmentMultiplier = '.60',
    HRBIQuery.PaySegmentMultiplier = '.40' 
WHERE (HRBIQuery.BasePayRangeSegment = 'Below segment 1' AND HRBIQuery.PayGroupCountryDesc = 'France',
    HRBIQuery.BasePayRangeSegment = 'S1' AND HRBIQuery.PayGroupCountryDesc = 'France',
    HRBIQuery.BasePayRangeSegment = 'S2' AND HRBIQuery.PayGroupCountryDesc = 'France',
    HRBIQuery.BasePayRangeSegment = 'S3' AND HRBIQuery.PayGroupCountryDesc = 'France',
    HRBIQuery.BasePayRangeSegment = 'S4' AND HRBIQuery.PayGroupCountryDesc = 'France',
    HRBIQuery.BasePayRangeSegment = 'S5' AND HRBIQuery.PayGroupCountryDesc = 'France');

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谢谢

这里有几个选项。
选项1：在查询中使用switch语句

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier =
  switch(HRBIQuery.BasePayRangeSegment = 'Below segment 1',1.35,
  HRBIQuery.BasePayRangeSegment = 'Below segment 1',1.35,
  HRBIQuery.BasePayRangeSegment = 'S1',1.25,
  HRBIQuery.BasePayRangeSegment = 'S2',1.15,
  HRBIQuery.BasePayRangeSegment = 'S3',.90,
  HRBIQuery.BasePayRangeSegment = 'S4',.60,
  HRBIQuery.BasePayRangeSegment = 'S5',.40)

WHERE HRBIQuery.BasePayRangeSegment IN('Below segment 1','S1','S2','S3','S4','S5') 
  AND HRBIQuery.PayGroupCountryDesc = 'France'    

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier = custom_function(HRBIQuery.BasePayRangeSegment)

WHERE HRBIQuery.BasePayRangeSegment IN('Below segment 1','S1','S2','S3','S4','S5') 
  AND HRBIQuery.PayGroupCountryDesc = 'France'

选项2：一个使用嵌套IIF语句的查询

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier =
  IIF(HRBIQuery.PaySegmentMultiplier='Below segment 1',1.35,
  IIF(HRBIQuery.PaySegmentMultiplier='S1',1.25,
  IIF(HRBIQuery.PaySegmentMultiplier='S2',1.15,
  IIF(HRBIQuery.PaySegmentMultiplier='S3,.90,
  IIF(HRBIQuery.PaySegmentMultiplier='S4',.60,
  IIF(HRBIQuery.PaySegmentMultiplier='S1',.40))))))

WHERE HRBIQuery.BasePayRangeSegment IN('Below segment 1','S1','S2','S3','S4','S5') 
  AND HRBIQuery.PayGroupCountryDesc = 'France'

选项3：使用6个不同的查询。我不会把六个字都打出来。希望你能明白

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier = 1.35
WHERE HRBIQuery.BasePayRangeSegment  = 'Below segment 1'
  AND HRBIQuery.PayGroupCountryDesc = 'France'

选项4：使用自定义函数。创建一个公共函数并在查询中调用它

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier =
  switch(HRBIQuery.BasePayRangeSegment = 'Below segment 1',1.35,
  HRBIQuery.BasePayRangeSegment = 'Below segment 1',1.35,
  HRBIQuery.BasePayRangeSegment = 'S1',1.25,
  HRBIQuery.BasePayRangeSegment = 'S2',1.15,
  HRBIQuery.BasePayRangeSegment = 'S3',.90,
  HRBIQuery.BasePayRangeSegment = 'S4',.60,
  HRBIQuery.BasePayRangeSegment = 'S5',.40)

WHERE HRBIQuery.BasePayRangeSegment IN('Below segment 1','S1','S2','S3','S4','S5') 
  AND HRBIQuery.PayGroupCountryDesc = 'France'    

UPDATE HRBIQuery SET HRBIQuery.PaySegmentMultiplier = custom_function(HRBIQuery.BasePayRangeSegment)

WHERE HRBIQuery.BasePayRangeSegment IN('Below segment 1','S1','S2','S3','S4','S5') 
  AND HRBIQuery.PayGroupCountryDesc = 'France'

自定义函数应该是这样的（很抱歉出现语法错误，但您应该知道）：

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那是行不通的。您将同一字段设置为多个不同的值，而where子句是一个明显的语法错误。你的意思是你想用这6个不同的值更新6个不同的记录？正确，我想根据6个不同的条件更新6个不同的记录，然后运行6个单独的更新。单独测试/设置这6个值会导致非常糟糕的更新。你可以使用嵌套的iif在一个查询中完成它，但这非常糟糕。您还可以在where中使用IN语句，而不是5个单独的where条件。第二个选项是创建一个自定义函数，将BasePayRangeSegment传递给它，然后它将根据一个简单的case语句返回相应的值。第三种选择是运行6个不同的查询。