Mysql 是否可以从查询中透视输出?
我有此查询的输出:Mysql 是否可以从查询中透视输出?,mysql,sql,pivot,on-the-fly,Mysql,Sql,Pivot,On The Fly,我有此查询的输出: select Date,Status, count(distinct persons)from TableA where Date='2014-11-04' group by Status; +------------+------------------------+-------------------------------+ | Date | Status | count(distinct persons) |
select Date,Status, count(distinct persons)from TableA where Date='2014-11-04' group by Status;
+------------+------------------------+-------------------------------+
| Date | Status | count(distinct persons) |
+------------+------------------------+-------------------------------+
| 2014-11-04 | 0 | 45 |
| 2014-11-04 | 1 | 93 |
+------------+------------------------+-------------------------------+
我想得到的是:
+------------+------------------------+-------------------------------+
| Date | 0 | 1 |
+------------+------------------------+-------------------------------+
| 2014-11-04 | 45 | 93 |
+------------+------------------------+-------------------------------+
您可以使用
CASE
在COUNT
函数中设置一个条件:
SELECT Date,
COUNT(DISTINCT CASE WHEN status = 0 THEN persons END) AS `0`,
COUNT(DISTINCT CASE WHEN status = 1 THEN persons END) AS `1`
FROM TableA
WHERE Date = '2014-11-04'
GROUP BY Date;
您可以使用以下代码-
select Date, [0], [1]
from
(select Date,Status,persons
from TableA
where Date='2014-11-04') AS SourceTable
PIVOT
(
COUNT(persons)
FOR Status IN ([0],[1])
) AS PivotTable;
可能重复的