如何创建下一个查询以分组依据

Question

我有这些疑问：

SELECT COUNT(*) AS numofrows, disposition,region FROM total_disposition_report WHERE disposition='ANSWERED' GROUP BY region ;

SELECT COUNT(*) AS numofrows, disposition,region FROM total_disposition_report WHERE disposition='BUSY' GROUP BY region ;

SELECT COUNT(*) AS numofrows, disposition,region FROM total_disposition_report WHERE disposition='...' GROUP BY region ;

SELECT COUNT(*) AS numofrows, disposition,region FROM total_disposition_report WHERE disposition='...' GROUP BY region ;

有没有机会在一个查询中获得相同的效果？

Answer 1

只需将disposition添加到group by：

即可

e.g：

SELECT COUNT(*) AS numofrows, disposition,region FROM total_disposition_report GROUP BY region, disposition;

Answer 2

SELECT COUNT(*) AS numofrows, disposition,region 
FROM total_disposition_report 
WHERE disposition IN ('ANSWERED', 'BUSY', '...') 
GROUP BY region, disposition ;