With the following SCHEMA
CREATE TABLE Software ( ID INT, name VARCHAR(150), ParentID INT ); INSERT INTO Software VALUES (1,'Main Product',NULL); INSERT INTO Software VALUES (2,'Next Main Product',NULL); INSERT INTO Software VALUES (3,'Addon Product',1); INSERT INTO Software VALUES (4,'Addon Product',1); INSERT INTO Software VALUES (5,'Sub-Addon Product',3);
I need to create a query that will sort the data by picking the first Main Product, then finding any addon products where the parent ID matches the ID of the parent, then seeing if that addon-product has any sub-addon products.
The Query I’ve tried based on one of the recommendations is
WITH x AS ( SELECT ID FROM Software WHERE ParentID IS NULL) SELECT Software.ID, Software.name FROM Software INNER JOIN x ON x.ID=Software.ParentID OR x.ID = Software.ID
The output however misses the sub-addon product shown below:
/--------------------- | ID | Name | 1 | Main Product | 3 | Addon Product | 4 | Addon Product | 2 | Main Product \----------------------
What I need is this where the sub-addon is added
/--------------------- | ID | Name | 1 | Main Product | 3 | Addon Product | 5 | Sub-Addon Product | 4 | Addon Product | 2 | Next Main Product \----------------------
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