SQL Where 子句未返回正确结果

Question

SELECT * FROM [dbo].[_5200_Sanoma] 
WHERE right(left([VARIABLE1)],4),2) = 'RI' 
and (
        ([Year] = '2014' and [Period] in('10','11','12'))
        or [Year] = '2015') 
        or  (
                [Year] = '2016' 
                and [Period] in('01','02','03','04','05','06','07','08')--,'09','10','11','12')
            )
and ([VARIABLE2] IN(
'String1',
'String2',
'String3',
'String4',
'String5',
'String6',
))

我不得不更改一些内容以使其更通用，但出于某种原因，第一个 where 子句 right(left([VARIABLE1)],4),2) = 'RI' 不起作用，因为我得到的结果是其他两个字符串。

这个查询在我添加最后一个 where 子句条件之前有效

   and ([VARIABLE2] IN(
    'String1',
    'String2',
    'String3',
    'String4',
    'String5',
    'String6',
    ))

现在我补充说它不起作用。有任何想法吗？

Answer 1

我猜你的 or 子句有一些括号问题（其中一个不包含在 WHERE right(left([VARIABLE1)],4),2) = 'RI'

之后的 AND 部分

尝试

    and (
            ([Year] = '2014' and [Period] in('10','11','12')) or 
             [Year] = '2015' or  
            ([Year] = '2016' and [Period] in('01','02','03','04','05','06','07','08')--,'09','10','11','12')
        )

Answer 2

尝试将你的陈述分成不同的行；你可能打算这样做：

SELECT * FROM [dbo].[_5200_Sanoma] 
WHERE right(left([VARIABLE1)],4),2) = 'RI' AND
(
    ([Year] = '2014' and [Period] in('10','11','12')) OR
    ([Year] = '2015') OR
    ([Year] = '2016' and [Period] in('01','02','03','04','05','06','07','08'))
)
and ([VARIABLE2] IN ('String1','String2','String3','String4','String5','String6'))

SQL Where 子句未返回正确结果

SQL Where Clause Not Returning Correct Results

sql

where