Mysql 使用不同的表创建视图

这里我得到的错误是： 子查询返回多行mysql

当我输入limit 1时，它返回整个表中的一个值。但是我想要所有的行 是否有任何其他选项可以获取所有这些数据

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提前感谢

您可以获得每行列表中的所有值。也许这就是你想要的：

create view xyz_view as
select 
    t1.sam_time, 
    t2.hos_id,
    (select t1.STAT_VALUE from table_1 t1 where t1.ID = 6 ) as col_1,
    (select t1.STAT_VALUE from table_1 t1 where t1.ID = 24 ) as col_2,
    (select t1.STAT_VALUE from table_1 t1 where t1.ID = 125 ) as col_3,
    (select t1.STAT_VALUE from table_1 t1 where t1.ID = 143 ) as col_4
from
    table_1 t1, table_2 t2
where 
    t1.entity = t2.hos_id;

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您还应该学会使用适当的

join

语法，它使用

join

关键字和

on

关键字来表示表之间的条件。

我不相信您。如果您的子查询返回多行，那么视图将得到一个大的笛卡尔乘积。你能编辑你的问题并提供样本数据和期望的结果吗？

select 
    t1.sam_time, 
    t2.hos_id,
    (select group_concat(t1.STAT_VALUE) from table_1 t1 where t1.ID = 6 ) as col_1,
    (select group_concat(t1.STAT_VALUE) from table_1 t1 where t1.ID = 24 ) as col_2,
    (select group_concat(t1.STAT_VALUE) from table_1 t1 where t1.ID = 125 ) as col_3,
    (select group_concat(t1.STAT_VALUE) from table_1 t1 where t1.ID = 143 ) as col_4
from table_1 t1 join
     table_2 t2
     on t1.entity = t2.hos_id;