mysql - 数据透视表 : getting data from one column

Question

假设我的 table 是这样的:

Date                   Status
2010-01-02            
2010-01-03             accept
2010-01-03             accept
2010-01-03             reject
2010-01-03
2010-01-04             reject

我想要如果值为 null，则表示接受。除此之外，我想显示如下结果:

Date         Accept            Reject      
2010-01-02    1                 0
2010-01-03    3                 1
2010-01-04    0                 1

意思是，计算状态栏中包含的接受或拒绝的数量。我该怎么做？

Answer 1

SELECT DATE AS DATE, SUM( IF( 
STATUS =  'accept', 1, 0 ) ) AS Accept, SUM( IF( 
STATUS =  'reject', 1, 0 ) ) AS Reject
FROM pivot
GROUP BY DATE

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