查看您描述的问题,我开始时仅将列值放入正确的星期几,这将创建 7 行,每行仅填充[Start Date]
下降日的列。
SELECT
[Monday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Monday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Tuesday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Tuesday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Wednesday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Wednesday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Thursday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Thursday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Friday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Friday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Saturday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Saturday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
,[Sunday] =
CASE WHEN DATENAME(DW,[Start Date]) = 'Sunday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END
FROM
[Resource table]
但后来我想,您可能希望在一行中显示所有这些,在这种情况下,您需要按某个值或多个值对它们进行分组。我不知道用于为组创建列值串联列表的 SQL 聚合函数,因此您可能需要创建一个,但您可以按培训室分组,并且如果每次培训每天只有一个条目room 可以使用类似下面的东西(SQL 纯粹主义者现在可能想把目光移开):
SELECT
[Week Id] = CONVERT(VARCHAR,DATEPART(YEAR,[Start Date])) + '-' + CONVERT(VARCHAR,DATEPART(WEEK,[Start Date]))
,[Training Room]
,[Monday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Monday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Tuesday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Tuesday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Wednesday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Wednesday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Thursday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Thursday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Friday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Friday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Saturday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Saturday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
,[Sunday] = MAX(CASE WHEN DATENAME(DW,[Start Date]) = 'Sunday' THEN ISNULL([Training Room],'') + N' - ' + [Time From To] ELSE '' END)
FROM
[Resource table]
GROUP BY
CONVERT(VARCHAR,DATEPART(YEAR,[Start Date])) + '-' + CONVERT(VARCHAR,DATEPART(WEEK,[Start Date]))
,[Training Room]
您总是可以省略我按 ([Week Id]
和[Training Room]
) 分组的两个初始列的声明,因为您不必为了查看它们而显示它们。