SQL语句，总是列出一种排序的3个条目

Question

I have another Problem

I just can show you this on an example:

I got a Table called "myTable" with 7 entries

myTable | id | user_id |
           1      1 
           2      1
           3      1
           4      1 
           5      2
           6      2 
           7      2  
           8      2  
           9      2  
           10     2  

Now i want to list just 3 entries of any user_id, but i cant find out myself how to.

Please help!

------- EDIT

My result have to look like this:

id=1 | user_id=1
id=2 | user_id=1
id=3 | user_id=1
id=5 | user_id=2
id=6 | user_id=2
id=7 | user_id=2

Answer 1

select * from table as t1
where (select count(*) from table as t2
       where t1.user_id = t2.user_id and t2.id < t1.id) <3