如何將mysql datestamp字段分隔爲年，季，月和日

Question

我有一個mysql數據庫，其中包含一個用於條目的日期戳字段。我真的很想把年，季，月和日分成單獨的專欄。我可以使新列沒有問題，但我不知道如何編寫一個簡單的查詢。我一直在玩的東西像這樣在一旁

SELECT MONTH(); 
FROM `datestamp` 

但還沒有任何喜悅......

任何幫助感激地接受:-)

Answer 1

這應該讓你開始...

SELECT DAY(`datestamp`) AS `day`, 
     MONTH(`datestamp`) AS `month`, 
     YEAR(`datestamp`) AS `year`, 
     QUARTER(`datestamp`) AS `quarter` 
    FROM `table`; 

Answer 2

這應該工作：

SELECT MONTH(`datestamp`) AS `datemonth`, 
DAY(`datestamp`) AS `dateday`, 
YEAR(`datestamp`) AS `dateyear`, 
QUARTER(`datestamp`) AS `datequarter` 
FROM `table`;