issue_comments: 1462962682

Here's a query that returns all notes in folder 1, including notes in descendant folders: sql with recursive nested_folders(folder_id, descendant_folder_id) as ( -- base case: select all immediate children of the root folder select id, id from folders where parent is null union all -- recursive case: select all children of the previous level of nested folders select nf.folder_id, f.id from nested_folders nf join folders f on nf.descendant_folder_id = f.parent ) -- Find notes within all descendants of folder 1 select * from notes where folder in ( select descendant_folder_id from nested_folders where folder_id = 1 ); With assistance from ChatGPT. Prompts were:

``` SQLite schema:

CREATE TABLE [folders] ( [id] INTEGER PRIMARY KEY, [long_id] TEXT, [name] TEXT, [parent] INTEGER, FOREIGN KEY([parent]) REFERENCES folders );

Write a recursive CTE that returns the following:

folder_id | descendant_folder_id

With a row for every nested child of every folder - so the top level folder has lots of rows Then I tweaked it a bit, then ran this: WITH RECURSIVE nested_folders(folder_id, descendant_folder_id) AS ( -- base case: select all immediate children of the root folder SELECT id, id FROM folders WHERE parent IS NULL UNION ALL -- recursive case: select all children of the previous level of nested folders SELECT nf.folder_id, f.id FROM nested_folders nf JOIN folders f ON nf.descendant_folder_id = f.parent ) -- select all rows from the recursive CTE SELECT * from notes where folder in (select descendant_folder_id FROM nested_folders where folder_id = 1)

Convert all SQL keywords to lower case, and re-indent ```