mysql查询以获得下一个结果

Question

How can I get next few results in mysql with some condition?

+-----+---------------+-------------------------+
| id  | update_type   |    message              |
+-----+-----------------------------------------+
| 1   |   10          | One tow three           |
| 2   |   20          | No error in this        |
| 3   |   0           | My testing message      |
| 4   |   0           | php module test         |
| 5   |   30          | hello world             |
| 6   |   0           | team spirit             |
| 7   |   40          | puzzle game             |
| 8   |   50          | social game             |
| 9   |   0           | stackoverflow           |
|10   |   0           | stackexchange           |
+-----+---------------+-------------------------+

In the above table how can I get all messages from update_type=20 and till update_type changes to 30 . (Above table is static and value of 0 and can expand upto many next rows)

Answer 1

You can use subqueries for this purpose. Assuming each value occurs once:

select t.*
from table t
where t.id >= (select t2.id from t t2 where t2.update_type = 20) and
      t.id <= (select t2.id from t t2 where t2.update_type = 30);

If the values appear more than once, then this query will generate an error (the subquery is expected to return only one value). What you want to do in this case is not clear, but min() or max() in the subqueries can help.

Answer 2

If I did get your question rigt, you are looking for a solution in SQL. If that's the point, then you can make a condition in the where-clause. ie

SELECT * FROM tablename WHERE columnname BETWEEN 20 AND 30;

You have to replace tablename with the name of your table. and columnname with your corresponding column in the table. Then you can enter the WHERE in the statement. In your case the condition is BETWEEN .