Question

嘿，我一直试图将数据库从Oracle转换为Sql Server格式，这是我遇到问题的一条线，我将在这里感谢一些帮助。

Oracle专栏：

TRUNC(CASE WHEN (b.rsn IS NOT NULL OR A.zeroreport = 1) AND b.datereceived IS NULL THEN A.datereceived ELSE b.datereceived END),

我一直在尝试将其转换为SQl Server，到目前为止我得到了：

CASE WHEN（b.rsn IS NOT NULL或A.zeroreport = 1）和b.datereceived IS NULL，然后A.datereceived ELSE b.datereceived END

，但不确定这是否正确。我刚刚删除了trun（不确定我是否需要它）

Answer 1

您正在使用trunc获取日期部分。您可以通过转换为日期在SQL Server中执行此操作。我想我会选择：

(CASE WHEN (b.rsn IS NOT NULL OR A.zeroreport = 1) AND b.datereceived IS NULL
      THEN CAST(A.datereceived as DATE)
      ELSE CAST(b.datereceived as DATE)
 END),

或者，如果您更喜欢CONVERT()，则使用CASE作为第一个参数更容易阅读：

CONVERT(DATE,
        (CASE WHEN (b.rsn IS NOT NULL OR A.zeroreport = 1) AND b.datereceived IS NULL
              THEN A.datereceived
              ELSE b.datereceived
         END),
        )

TRUNC（从Oracle到T-Sql Server的案例

1 个答案: