時間維度填充問題

Question

My MySql表正在返回日期而不是時間。我需要一天中的最低分鐘數，因此1440條記錄應該自動填充，但我一直在收回日期。任何想法爲什麼？此外，我不需要秒，只有小時和分鐘，但我不知道如何沒有因爲時間的格式秒做一個日期填充總是'00：00：00'

的步驟如下：

DELIMITER // 
CREATE PROCEDURE p_sc_time(IN startdate DATETIME,IN stopdate DATETIME) 
BEGIN 
DECLARE currentdate DATE; 
SET currentdate = startdate; 
WHILE currentdate < stopdate DO 
    INSERT INTO sc_time VALUES (
    NULL, 
    TIME(currentdate), 
    HOUR(currentdate), 
    MINUTE(currentdate)); 
SET currentdate == ADDDATE(currentdate,INTERVAL 1 MINUTE); 
END WHILE; 
END 
// 
DELIMITER ; 
TRUNCATE TABLE sc_time; 
CALL p_sc_time('01-01-01 00:00:00','01-01-01 23:59:59'); 

Answer 1

我沒有MySQL的測試運行實例，但我相信你應該將你的currentdate類型改爲DATETIME。

Answer 2

DROP TABLE IF EXISTS timedim; 

CREATE TABLE timedim (
    time_id INT NOT NULL auto_increment, 
    fulltime time, 
    hour int, 
    minute int, 
    second int, 
    ampm varchar(2), 
    PRIMARY KEY(time_id) 
) ENGINE=InnoDB AUTO_INCREMENT=1000; 

CREATE TABLE IF NOT EXISTS --#Must be a non-temporary table b/c temp tables cannot be self joined. 
    ints (i INT) AS #(Use select+union for CTAS - Create Table) 
     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); 

DROP PROCEDURE IF EXISTS timedimbuild; 

CREATE PROCEDURE timedimbuild() 
BEGIN 

DECLARE v_full_date DATETIME; 

CREATE TEMPORARY TABLE filler(id INT NOT NULL); 

INSERT INTO filler(id) 
SELECT (a.i*10000 + b.i*1000 + c.i*100 + d.i*10 + e.i) id 
FROM ints a JOIN ints b JOIN ints c JOIN ints d JOIN ints e 
WHERE (a.i*10000 + b.i*1000 + c.i*100 + d.i*10 + e.i) <= 86399 --# 86,400 seconds in a day (0 to 86399) 
ORDER BY 1; 

SET v_full_date = '1970-01-01 00:00:00';   

INSERT INTO timedim (
    fulltime , 
    hour , 
    minute , 
    second , 
    ampm 
) SELECT 
    TIME(DATE_ADD(v_full_date, INTERVAL t.id SECOND)), 
    HOUR(DATE_ADD(v_full_date, INTERVAL t.id SECOND)), 
    MINUTE(DATE_ADD(v_full_date, INTERVAL t.id SECOND)), 
    SECOND(DATE_ADD(v_full_date, INTERVAL t.id SECOND)), 
    DATE_FORMAT(DATE_ADD(v_full_date, INTERVAL t.id SECOND), '%p')  
    FROM (SELECT id FROM filler) t; 

DROP TEMPORARY TABLE filler; 
END; 

call timedimbuild();