How to select 10 rows below the result returned by the SQL query?

Here is the SQL table:

KEY | NAME    | VALUE  
---------------------
13b | Jeffrey | 23.5  
F48 | Jonas   | 18.2  
2G8 | Debby   | 21.1

Now, if I type:

SELECT * 
  FROM table  
 WHERE VALUE = 23.5

I will get the first row.

What I need to accomplish is to get the first and the next two rows be开发者_JS百科low. Is there a way to do it?

Columns are not sorted and WHERE condition doesn't participate in the selection of the rows, except for the first one. I just need the two additional rows below the returned one - the ones that were entered after the one which has been returned by the SELECT query.

Without a date column or an auto-increment column, you can't reliably determine the order the records were entered.

The physical order with which rows are stored in the table is non-deterministic.

You need to define an order to the results to do this. There is no guaranteed order to the data otherwise. If by "the next 2 rows after" you mean "the next 2 records that were inserted into the table AFTER that particular row", you will need to use an auto incrementing field or a "date create" timestamp field to do this.

If each row has an ID column that is unique and auto incrementing, you could do something like:

SELECT * FROM table WHERE id > (SELECT id FROM table WHERE value = 23.5)

If I understand correctly, you're looking for something like: SELECT * FROM table WHERE value <> 23.5

You can obviously write a program to do that but i am assuming you want a query. What about using a Union. You would also have to create a new column called value_id or something in those lines which is incremented sequentially (probably use a sequence). The idea is that value_id will be incremented for every insert and using that you can write a where clause to return the remaining two values you want.

For example:

Select * from table where value = 23.5 Union Select * from table where value_id > 2 limit 2;

Limit 2 because you already got the first value in the first query

You need an order if you want to be able to think in terms of "before" and "after".

Assuming you have one you can use ROW_NUMBER() (see more here http://msdn.microsoft.com/en-us/library/ms186734.aspx) and do something like:

With MyTable
(select row_number() over (order by key) as n, key, name, value
from table)

select key, name, value
from MyTable
where n >= (select n from MyTable where value = 23.5)