Question

我有以下SQL代码，我试图转换为SSIS 2012派生列表达式：

QUATER= 
        CASE
            WHEN DATEPART(M, @BD) BETWEEN 1 AND 3 THEN 'Q1'
            WHEN DATEPART(M, @BD) BETWEEN 4 AND 6 THEN 'Q2'
            ELSE 'OTHER'
        END

My Expression看起来像这样，并且有效：

DATEPART("M", @[User::BD]) == 1 ? "Q1":
(DATEPART("M", @[User::BD]) == 2 ? "Q1":
(DATEPART("M", @[User::BD]) == 3 ? "Q1":
(DATEPART("M", @[User::BD]) == 4 ? "Q2":
(DATEPART("M", @[User::BD]) == 5 ? "Q2":
(DATEPART("M", @[User::BD]) == 6 ? "Q2" : "OTHER"
)))))

有更优雅的方法吗？

Answer 1

不是更令人兴奋，但这应该是等价的：

DATEPART("M", @[User::BD]) <= 3 ? "Q1":
(DATEPART("M", @[User::BD]) <= 6 ? "Q2" : "OTHER"
)

同样，您可以使用季度而不是月份：

DATEPART("q", @[User::BD]) <= 2 ? "Q"+DATEPART("q", @[User::BD]) : "OTHER"

无法测试字符串连接，您可能需要将DATEPART()输出转换为文本。

用于CASE的SSIS派生列表达式

1 个答案: