Query for updating a node in hierarchial tree structure
Newly created team projects contain a single, root area that corresponds to the team project name.Team projects typically specify a predefined set of iterations to help you get started tracking your work. The iterations you see depend on the process you used to create your team project.
Make note of how this solution scales or what it could be paired with for scaling (i.e. I'm interested in seeing how this could be represented using distributed data stores, especially using data stores that emphasize key-value data and pairing various data store technologies to manage different types of data (i.e.
The closure table behaves as loosely coupled overlay, and additional tables could be used to represent alternative structure pertaining to the data.
To SELECT tree_node.id, tree_node.node_deleted, tree_node.data_body, tree_hierarchy.ancestor AS parent_id FROM tree_node JOIN tree_hierarchy ON tree_node.id=tree_hierarchy.ancestor WHERE tree_hierarchy.descendant= AND tree_node.node_deleted IS NULL UNION SELECT tree_node.id, tree_node.node_deleted, tree_node.data_body, tree_hierarchy.ancestor AS parent_id FROM tree_node JOIN tree_hierarchy ON tree_node.id=tree_hierarchy.descendant WHERE tree_hierarchy.ancestor= query requires a non-trivial (but reasonably small) amount of work to return all nodes in the tree.
It's then the program logic's responsibility to turn the results into a data structure representation that the application logic can use.
Note an interesting quirk: this technique enables getting an entire tree by specifying any node ID within the tree.
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