sql limit where having order
 
mysql sql limit
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SQL语句执行顺序及MySQL中limit的用法   
.  
 写的顺序:select ... from... where.... group by... having... order by..  
 执行顺序:from... where...group by... having.... select ... order by...  

 

   
MYSQL中:
  
写的顺序:select ... from... where.... group by... having... order by.. limit [offset,] (rows)  
 执行顺序:from... where...group by... having.... select ... order by... limit

 

 
limit限制查询的结果序号
 
 limit off, n: 从off偏移取n个数据  
 
 limit n: 取前n个数据,相当于limit 0, n