how to implement a query so that i get the result as required

Question

I have a table with these values. I want to query this table with limit of 5 but i want total row always to be part of resultset.

Table Description:

  id  desc  value

  1    A     100
  2    B     200
  3    C     300
  4    D     400
  5    E     500
  6    F     600
  7    G     700
  8    H     800
  9    I      900
  10  Total 1000

i want to know whether its possible.

Answer 1

Like this:

SELECT id, `desc`, value FROM table
UNION ALL
SELECT MAX(id), 'Total', SUM(value) FROM table;

However, If you need to limit the selection from the table to only 5, you have to use LIMIT inside two subqueries like so:

SELECT id, `desc`, value
FROM
(
  SELECT id, `desc`, value FROM table1
  ORDER BY id
  LIMIT 5
) t
UNION ALL
SELECT MAX(id), 'Total', SUM(value) 
FROM
(
  SELECT id, `desc`, value FROM table1
  ORDER BY id
  LIMIT 5
) t;

For your sample data this will give you:

| ID |  DESC | VALUE |
----------------------
|  1 |     A |   100 |
|  2 |     B |   200 |
|  3 |     C |   300 |
|  4 |     D |   400 |
|  5 |     E |   500 |
|  5 | Total |  1500 |

SQL Fiddle Demo

Note that: The Total row will be the sum of all the previous value values, however, in your sample data it is not the total.

Answer 2

That's a little messy in a single query. Maybe you can use a UNION query:

SELECT `id`, `value` FROM `table` LIMIT 5
UNION
SELECT 'Total', SUM(`value`) AS `value` FROM `table`

This will yield 5 rows from the table and a 'Total' row under.

Answer 3

you can alternatively use WITH ROLLUP . but the downside is one column is missing: the ID .

SELECT COALESCE(`desc`, 'TOTAL') `desc`, SUM(`value`) Value
FROM Description
GROUP BY `desc`
WITH ROLLUP

• SQLFiddle Demo