SQL Server Query - Oracle Does Not Support OUTER APPLY Statement

DECLARE @MainTable TABLE (UniqueID INTEGER, Category VARCHAR(200), WeekDate DATETIME, VALUE INTEGER)
INSERT INTO @MainTable VALUES(123, 'Shirts', '10/07/2011', 5000)
INSERT INTO @MainTable VALUES(123, 'Shirts', '10/14/2011', 8000)
INSERT INTO @MainTable VALUES(124, 'Pants', '10/07/2011', 4000)
INSERT INTO @MainTable VALUES(125, 'Shorts', '10/14/2011', 8000)
INSERT INTO @MainTable VALUES(126, 'Shoes', '10/21/2011', 9000);
--select * from @MainTable;
[code]...

The query works with all the CTEs up to the last select statement. Oracle does not support the OUTER APPLY statement, how should the last piece be written to make it work in Oracle?