Values and Subtotals

Get values and Subtotals in one shot.

In this example you are shown how to obtain subtotals in your query, allowing you to easily see SUM results for different elements.

Table 1 shows the result without the subtotals and Table 2 shows the result with subtotals.

Table 1

item	serialnumber	price
Awl	1	10
Awl	3	10
Bowl	2	10
Bowl	5	10
Bowl	6	10
Cowl	4	10

Table 2

item	serialnumber	price
Awl	1	10
Awl	3	10
Awl		20
Bowl	2	10
Bowl	5	10
Bowl	6	10
Bowl		30
Cowl	4	10
Cowl		10

schema:scott

DROP TABLE serial

 CREATE TABLE serial(
  item VARCHAR(20),
  serialnumber INTEGER,
  price INTEGER );
INSERT INTO serial VALUES ('Awl',1,10);
INSERT INTO serial VALUES ('Awl',3,10);
INSERT INTO serial VALUES ('Bowl',2,10);
INSERT INTO serial VALUES ('Bowl',5,10);
INSERT INTO serial VALUES ('Bowl',6,10);
INSERT INTO serial VALUES ('Cowl',4,10);

In this example a UNION is used to make the query show the subtotal results along with the price results and to ensure the subtotals come after the price a COALESCE function is also used.

SELECT item, serialnumber, price 
  FROM(SELECT item, serialnumber, price 
         FROM serial
         UNION
         SELECT item, NULL, SUM(price)
           FROM serial
           GROUP BY item ) t
           ORDER BY item, 
           COALESCE(serialnumber,1E9)

Grand total can also be obtained through ROLLUPS:

SELECT item, serialnumber, SUM(price)
   FROM serial
   GROUP BY item, serialnumber WITH ROLLUP

Grand total can also be obtained through ROLLUPS:

SELECT item, serialnumber, SUM(price)
   FROM serial
   GROUP BY item, serialnumber WITH ROLLUP

Grand total can be obtained through GROUPING SETS:

SELECT item, serialnumber, SUM(price)
   FROM serial
   GROUP BY GROUPING SETS ((item,serialnumber),(item),())

Both oracle and MySQL methods work for DB2

SQL HACKS

Hack 10 Converting subqueries into joins

Hack 11 Converting aggregate subqueries into joins

Hack 14 Generate Combinations

Hack 16 Search for a String across columns

Hack 24 Multiply Across a Result Set

Hack 25 Keep a running total

Hack 25.5 Splitting and combining columns

Hack 26 Include the rows your JOIN forgot

Hack 30 Calculate the maximum/minimum of two fields

Hack 33 Get values and subtotals in one shot

Hack 50 Combine tables containing different data

Hack 51/52 Display rows as columns

Hack 55 Import Someone Else's Data

Hack 62 Issue Queries Without Using a Table

Hack 63 Generate rows without tables

Hack 70 Combine your queries

Hack 72 Extract a subset of the results

Hack 78 Break it down by Range

Hack 88 Test two values from a subquery

Hack 98 Find and stop long running queries

Hack 100 Run SQL from a Web Page