Sql 如何从我的表中创建查询请查看图片

我想询问一下调查结果

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如何实现此目标？

这是您无需分组即可选择值的方法：

select name, case when ket = 'dalam proses' then 1 else 0 end dalam_proses, 'selesai' then 1 else 0 end selesai
from yourtable;

让我们将其用作子查询：

select name, sum(dalam_proses) as dalam_proses, sum(selesai) as selesai
from (
    select name, case when ket = 'dalam proses' then 1 else 0 end dalam_proses, 'selesai' then 1 else 0 end selesai
    from yourtable
} t
group by name;

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您可以使用子查询来完成此操作，如下所示：

select 
    name, 
    distinct(name) , 
    count(select ket from my_table where ket = 'dalam proses' ) as 'dalam proses',
    count(select ket from my_table where ket = 'selesai' ) as 'selesai'
from my_table
group by name;

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使用

case

表达式进行条件聚合：

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dalam进程

和

selesai

。这些是列

ket

的唯一有效值吗？顺便说一下，建议您也使用正在使用的DBMS标记您的问题。您正在使用SQL Server吗？你在使用MySQL吗？

select name,
       sum(case when ket = 'dalam proses' then 1 else 0 end) as dalam_proses,
       sum(case when ket = 'selesai' then 1 else 0 end) as selesai
from tablename
group by name