Question

我有像这样的SQL查询

SELECT TOP 1 
    ROW_NUMBER() OVER (ORDER BY column_date DESC) AS ROWID, * 
FROM 
    table_report 
WHERE 
    column_date = datepart(year,date)

如果我错了，请更正。我希望从datetime获取年份，然后逐年选择前1行

Answer 1

您可以通过向窗口函数添加分区来选择每年的第一行（按照您提供的顺序），然后过滤每年的第一行：

SELECT * FROM
(
    SELECT ROW_NUMBER() OVER 
     (PARTITION BY datepart(year,date) ORDER BY column_date DESC) AS ROWID,
     * 
    FROM table_report 
) X
WHERE ROWID = 1;

如何使用select datepart

1 个答案: