獲取2個日期之間的所有日期

問題：查詢對應日期範圍內的具體日期

例如：獲取某一個月的資料報表（想用sql一下子寫完），然而資料庫只有幾天的記錄資訊

解決方法：sql、儲存過程、變數控制、維護一個系統日期表...等

現在以sql的方式解決問題

輸入：2022-4-10 ~ 2022-4-15
結果：
2022-4-11
2022-4-12
2022-4-13
2022-4-14
2022-4-15

sql

SELECT * FROM
    (
        SELECT adddate('1970-01-01',t4.i * 10000 + t3.i * 1000 + t2.i * 100 + t1.i * 10 + t0.i) selected_date
        
 
FROM
            ( SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 
                                     UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 ) t0,
            ( SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 
                                     UNION
 
 SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 ) t1,
            ( SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 
                                     UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 ) t2,
            ( SELECT 0
 
 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 
                                     UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 ) t3,
            ( SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 
                                     UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 ) t4
    ) a
WHERE selected_date BETWEEN '2022-04-18'AND '2022-04-19'

結果