Getting Started with IBM Data Studio for DB2

294 Getting Started with IBM Data Studio for DB2
PRODUCT_CATALOG
This procedure is defined under theGOSALES schema. It returns a result set containing all
products from the catalog for a given product type. Using the information you learned in
Chapter 8, create the following procedure (you can cut and paste the text below into the
SQL procedure editor). Be sure to deploy it into theGOSALES schema.
CREATE PROCEDURE GOSALES.PRODUCT_CATALOG (IN PRODUCT_TYPE VARCHAR(50))
DYNAMIC RESULT SETS 1
SPECIFIC GOSALES.PRODUCT_CATALOG
------------------------------------------------------------------------
-- SQL Stored Procedure
------------------------------------------------------------------------
P1: BEGIN
-- Declare cursor
DECLARE CURSOR1 CURSOR WITH RETURN FOR
SELECT P.PRODUCT_NUMBER, Q.PRODUCT_NAME,
Q.PRODUCT_DESCRIPTION,
P.PRODUCTION_COST, P.PRODUCT_IMAGE
FROM GOSALES.PRODUCT AS P,
GOSALES.PRODUCT_NAME_LOOKUP AS Q,
GOSALES.PRODUCT_TYPE AS R
WHERE P.PRODUCT_NUMBER = Q.PRODUCT_NUMBER
AND Q.PRODUCT_LANGUAGE = 'EN'
AND R.PRODUCT_TYPE_CODE = P.PRODUCT_TYPE_CODE
AND R.PRODUCT_TYPE_EN = PRODUCT_TYPE;
-- Cursor left open for client application
OPEN CURSOR1;
END P1
Listing 10.2 – PRODUCT_CATALOG procedure
10.5.2 SQL statements used in the web service
We use two SQL statements for our web service:
GetBestSellingProductsByMonth
RankEmployee.
GetBestSellingProductsByMonth
The SQL statement shown in Listing 10.3 returns the top 50 products by shipping numbers
for the given month. Using the information in Chapter 5, create a new SQL script with the
nameGetBestSellingProductsByMonth and copy the below statement into that
script.
SELECT PN.PRODUCT_NAME, PB.PRODUCT_BRAND_EN, SUM(IL.QUANTITY_SHIPPED) AS
NUMBERS_SHIPPED, PN.PRODUCT_DESCRIPTION
FROM GOSALES.INVENTORY_LEVELS AS IL, GOSALES.PRODUCT AS P,
GOSALES.PRODUCT_NAME_LOOKUP AS PN, GOSALES.PRODUCT_BRAND AS PB
WHERE IL.PRODUCT_NUMBER = PN.PRODUCT_NUMBER
AND IL.PRODUCT_NUMBER = P.PRODUCT_NUMBER
AND P.PRODUCT_BRAND_CODE = PB.PRODUCT_BRAND_CODE