将SQL查询限制为天

Question

我使用此SQL查询按天制作状态报告：

CREATE TABLE TICKET(
 ID INTEGER NOT NULL,
 TITLE TEXT,
 STATUS INTEGER,
 LAST_UPDATED DATE,
 CREATED DATE
)
;

查询：

SELECT t.created,
       COUNT(CASE WHEN t.status = '1' THEN 1 END) as cnt_status1,
       COUNT(CASE WHEN t.status = '2' THEN 1 END) as cnt_status2,
       COUNT(CASE WHEN t.status = '3' THEN 1 END) as cnt_status3,
       COUNT(CASE WHEN t.status = '4' THEN 1 END) as cnt_status4
FROM ticket t
GROUP BY t.created

如何将此查询限制为过去7天？ 此外，我想将结果分开。例如，我想将第一个日期分为24小时，第二个日期为24小时等等。

预期结果：

Answer 1

这可能会有所帮助：

SELECT   TO_CHAR(t.created, 'YYYY-MM-DD') AS created_date,
         COUNT(CASE WHEN t.status = '1' THEN 1 END) as cnt_status1,
         COUNT(CASE WHEN t.status = '2' THEN 1 END) as cnt_status2,
         COUNT(CASE WHEN t.status = '3' THEN 1 END) as cnt_status3,
         COUNT(CASE WHEN t.status = '4' THEN 1 END) as cnt_status4
FROM     ticket t
WHERE    t.created >= SYSDATE-7
GROUP BY TO_CHAR(t.created, 'YYYY-MM-DD')
ORDER BY created_date;

我使用oracle函数进行日期转换。我相信你会找到相应的postgresql。