MySQL線性MIN MAX插值提取

Question

我想用BASh腳本進行插值。我有一個數據基地[從片段]是這樣的：

對於一個給定值timestamp我想要的SQL與相應value和相若方式返回timestamp最近的更大價值對於最接近的較小值timestamp也返回相應的value。

問：查詢看起來像什麼來提取這些信息？

Answer 1

你可以試試這個。另請注意，時間戳是reserved word for MySQL。

SELECT (
    SELECT `timestamp` 
    FROM your_table 
    WHERE `timestamp` > 'your_value' 
    ORDER BY `timestamp` ASC 
    LIMIT 1 
) AS one_greater, 
(
    SELECT `timestamp` 
    FROM your_table 
    WHERE `timestamp` < 'your_value' 
    ORDER BY `timestamp` DESC 
    LIMIT 1 
) AS one_less;