Re: sql output to a multidimensional array

K.A.Bouton wrote:

I need the output of my sql to be a multidimensional array as follows.

then Chris wrote:

You won't be able to get an sql query to return in that format (I know what you're trying to do, I've used the same chart software).

This is my MSSQL Server solution, and yep, it outputs EXACTLY like requested. I'm not sufficiently fluent with MySQL, so this may have some "dialect" translation that needs done. Also, this IS NOT a scalable solution at all. It assumes you know the years you want the information for, and requires that you specify the years in two specific areas of the query. Some SQL engines have a cross tab function that will make this a little more automatic (MSSQL is one such engine), but they are typically extensions to the SQL spec. and are specific to each engine (i.e. the MSSQL implementation would not work for MySQL). -- Mitch ----------- SQL BEGINS HERE --------- -- Table of products CREATE TABLE #Products (

    Product CHAR(3) NOT NULL

) INSERT #Products(Product) VALUES('AAA') INSERT #Products(Product) VALUES('BBB') INSERT #Products(Product) VALUES('CCC') -- Sales history table. CREATE TABLE #Sales (

    Product CHAR(3) NOT NULL ,
    Quantity INT NOT NULL ,
    SaleYear INT NOT NULL

) -- Product AAA, Intentionally left out 2003 INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 4, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 3, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 4, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 2, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 8, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 5, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 7, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 5, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('AAA', 6, 2004) -- Product BBB, Intentionally left out 2002 INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 3, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 2, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 5, 2001) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 2, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 7, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 2, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 7, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 1, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('BBB', 8, 2004) -- Product CCC, Intentionally left out 2001 INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 2, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 9, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 2, 2002) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 9, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 3, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 7, 2003) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 2, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 1, 2004) INSERT #Sales(Product, Quantity, SaleYear) VALUES('CCC', 5, 2004) -- Now for the totally UNscalable query.

SELECT    p.Product,
    COALESCE(y1.TotalQuan, 0) AS Quan2001,
    COALESCE(y2.TotalQuan, 0) AS Quan2002,
    COALESCE(y3.TotalQuan, 0) AS Quan2003,
    COALESCE(y4.TotalQuan, 0) AS Quan2004

FROM #Products AS p FULL OUTER JOIN (

    SELECT Product, Sum(Quantity) AS TotalQuan
    FROM #Sales
    WHERE SaleYear = 2001
    GROUP BY Product

) AS y1 ON y1.Product = p.Product FULL OUTER JOIN (

    SELECT Product, Sum(Quantity) AS TotalQuan
    FROM #Sales
    WHERE SaleYear = 2002
    GROUP BY Product

) AS y2 ON y2.Product = p.Product FULL OUTER JOIN (

    SELECT Product, Sum(Quantity) AS TotalQuan
    FROM #Sales
    WHERE SaleYear = 2003
    GROUP BY Product

) AS y3 ON y3.Product = p.Product FULL OUTER JOIN (

    SELECT Product, Sum(Quantity) AS TotalQuan
    FROM #Sales
    WHERE SaleYear = 2004
    GROUP BY Product

) AS y4 ON y4.Product = p.Product -- Cleanup DROP TABLE #Sales DROP TABLE #Products