Question

我有两个MYSQL查询，我试图合并为一个，这是第一个 -

SELECT 
  `Your_Name` as agentname,
  sum(`Sale_Amount`) as todaysales, 
  COUNT(*) as NoSales 
FROM mp_wp_sales_tracking 
WHERE `created` BETWEEN CURDATE() AND NOW() 
GROUP BY agentname

第二个是同一个查询，仅适用于前一天

SELECT 
  `Your_Name` as agentname,
  sum(`Sale_Amount`) as yesterdaysales, 
  COUNT(*) as YesterdayNoSales 
FROM mp_wp_sales_tracking 
WHERE `created` BETWEEN DATE_SUB(CURDATE(),INTERVAL 1 DAY) 
                    AND ADDTIME(DATE_SUB(CURDATE(),INTERVAL 1 DAY),'23:59:59.50') 
GROUP BY agentname

现在我想做的是，实现类似下面的内容（MYSQL中的别名标题）

| agentname | todaysales | nosales | yesterdaysales | yesterdaynosales |

我已经尝试过使用内部联接，但是一直在尝试使用SQL错误，我不知道在哪里开启它，对于复杂的MYSQL查询来说还是一个新手。

Answer 1

我可以想到一种方法来合并这两个查询并对结果使用条件聚合

SELECT `Your_Name` as agentname,
SUM( CASE WHEN 
    `created` BETWEEN DATE_SUB(CURDATE(),INTERVAL 1 DAY) AND ADDTIME(DATE_SUB(CURDATE(),INTERVAL 1 DAY),'23:59:59.50') 
    THEN `Sale_Amount`
    ELSE 0 END
    ) as yesterdaysales,
SUM(`created` BETWEEN DATE_SUB(CURDATE(),INTERVAL 1 DAY) AND ADDTIME(DATE_SUB(CURDATE(),INTERVAL 1 DAY),'23:59:59.50') ) as YesterdayNoSales ,
SUM(CASE WHEN 
    `created` BETWEEN CURDATE() AND NOW()
    THEN `Sale_Amount`
    ELSE 0 END
    ) as todaysales,
SUM(`created` BETWEEN CURDATE() AND NOW() ) as NoSales
FROM mp_wp_sales_tracking 
WHERE `created` BETWEEN DATE_SUB(CURDATE(),INTERVAL 1 DAY) AND ADDTIME(DATE_SUB(CURDATE(),INTERVAL 1 DAY),'23:59:59.50') 
       OR `created` BETWEEN CURDATE() AND NOW() 
GROUP BY agentname

Answer 2

使用条件聚合（即加法函数中的布尔表达式，例如CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f617eaf4d211 nginx:latest "nginx -g 'daemon ..." About a minute ago Up About a minute (healthy) 80/tcp nginx.1.htgg23ysze00qr0kb790lyxnv）。

SUM

MYSQL多个选择，同一个表的位置和分组

2 个答案: