如何隐藏 sql 中为空的总和值？

Question

如何删除包含空值的行？

我是 sql 的新手，所以如何隐藏包含空值的行？
我想在我的报告中隐藏或删除具有空值的行，以便它只显示包含一些数据的行。任何帮助将不胜感激...

SELECT `id`,
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '1' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END) AS 'annual',
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '2' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END)'sick',
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '3' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END)'compassionate',
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '4' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END)'maternity',
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '5' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END)'matrimonial',
    SUM(CASE WHEN `start_date` BETWEEN '2015-01-01' AND '2015-01-25' AND `leave_type` = '7' AND `status`<>'Canceled' AND `s_status`='Approved' THEN `no_days` ELSE NULL END)'unpaid'
 FROM `leave_history`
 GROUP BY `id`

这是我的查询的输出

id     annual    sick   compassionate  maternity  matrimonial  unpaid
2        20       40      (NULL)         (NULL)      (NULL)     (NULL)
5      (NULL)   (NULL)    (NULL)         (NULL)      (NULL)     (NULL)
11     (NULL)   (NULL)    (NULL)         (NULL)      (NULL)     (NULL)
55     (NULL)   (NULL)    (NULL)         (NULL)      (NULL)     (NULL)
135    1           1      (NULL)         (NULL)      (NULL)     (NULL)

Answer 1

检查 IS NULL / IS NOT NULL 谓词和 HAVING 子句。

SELECT id ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '1' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS annual ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '2' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS sick ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '3' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS compassionate ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '4' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS maternity ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '5' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS matrimonial ,
        SUM(CASE WHEN start_date BETWEEN '2015-01-01' AND '2015-01-25' AND leave_type = '7' AND status<>'Canceled' AND s_status='Approved' THEN no_days ELSE NULL END) AS unpaid
FROM leave_history GROUP BY id
HAVING annual IS NOT NULL AND sick IS NOT NULL ... and so on

如何隐藏 sql 中为空的总和值？

how to hide sum value that is null in sql?

mysql

null

sum

如何删除包含空值的行？