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How to create a ring buffer table in SQLite
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-- Example table | |
CREATE TABLE ring_buffer (id INTEGER PRIMARY KEY AUTOINCREMENT, data TEXT); | |
-- Number 10 on where statement defines the ring buffer's size | |
CREATE TRIGGER delete_tail AFTER INSERT ON ring_buffer | |
BEGIN | |
DELETE FROM ring_buffer WHERE id%10=NEW.id%10 AND id!=NEW.id; | |
END; |
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