如何從Integer列的日期列中添加日期，由SQL

Question

我有列'A'，它是日期列CREATED AS CAST(GETDATE() AS DATE)和列'B'是一個整數列。

我想創建C列以顯示A + B作爲日期。

Answer 1

嘗試像這樣

CREATE TABLE #test(DateColumn DATETIME, IntColumn INT); 
INSERT INTO #test VALUES 
({ts'2016-01-01 00:00:00'},1) 
,({ts'2016-01-10 11:30:00'},-2) 
,(GETDATE(),3); 

SELECT DateColumn AS A 
     ,IntColumn AS B 
     ,DATEADD(DAY,IntColumn,DateColumn) AS C 
FROM #test; 

DROP TABLE #test; 

BTW：添加整整兩天，甚至會用簡單的DateValue+IntValue