使用 mysql 查询计算数据

Question

我有以下内容table

id   kelurahan    status
1    Pegambiran   Netral
2    Pegambiran   Netral
3    Kejaksan     Positif
4    Kesenden     Positif
5    Pegambiran   Negatif

我想得到这样的结果

kelurahan    count_positif   count_netral   count_negatif   total
Pegambiran   0               2              1               3
Kejaksan     1               0              0               1
Kesenden     1               0              0               1

我试过这个查询

SELECT kelurahan, 
(SELECT COUNT(status) FROM tbl_monitoring WHERE status = 'Positif' GROUP BY kelurahan LIMIT 1) AS count_positif, 
(SELECT COUNT(status) FROM tbl_monitoring WHERE status = 'Netral' GROUP BY kelurahan) AS count_netral,
(SELECT COUNT(status) FROM tbl_monitoring WHERE status = 'Negatif' GROUP BY kelurahan) AS count_negatif, 
COUNT(kelurahan) AS total 
FROM tbl_monitoring GROUP BY kelurahan

我得到这样的结果

如有任何帮助，我们将不胜感激。

Answer 1

您应该使用 SUM，而不是 COUNT。
测试于 dbfiddle

SELECT 
  kelurahan, 
  SUM(CASE WHEN status = 'Positif' THEN 1 ELSE 0 END) AS count_positif,
  SUM(CASE WHEN status = 'Netral' THEN 1 ELSE 0 END) AS count_netral,
  SUM(CASE WHEN status = 'Negatif' THEN 1 ELSE 0 END) AS count_negatif,
  SUM(1) AS total
FROM tbl_monitoring
GROUP BY kelurahan;

使用 mysql 查询计算数据

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