【MySQL】select查询语句的执行顺序

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编写mysql的查询语句时，要注意关键字的顺序，顺序不对的话会报错！

select
from 
join on 
where  
group by  
having  
union  
order by  
limit  

通常，查询语句的执行顺序如下 ：

from
on
join
where
group by
having
select
distinct
union
order by