實現根據當前ID讀取上一條和下一條記錄

以下爲MYSQL語句演示：

SELECT * FROM t_news AS n ORDER BY n.`News_ID`

當前ID爲4，讀取上一條記錄：

SELECT * FROM t_news AS n WHERE n.`News_ID` < 4 ORDER BY n.`News_ID` DESC  LIMIT 0,1;

當前ID爲4，讀取下一條記錄：

SELECT * FROM t_news AS n WHERE n.`News_ID` > 4 ORDER BY n.`News_ID` LIMIT 0,1;

其他數據庫，不用limit，改用top關鍵字即可。