35 lines
954 B
PL/PgSQL
Executable File
35 lines
954 B
PL/PgSQL
Executable File
-- Type: DO
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-- Name: create_label_names_update_trigger
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-- Description: Create label_names_update trigger in library_item table
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BEGIN;
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CREATE OR REPLACE FUNCTION update_label_names()
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RETURNS TRIGGER AS $$
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BEGIN
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UPDATE omnivore.library_item
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SET label_names = array_replace(label_names, OLD.name, NEW.name)
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WHERE user_id = OLD.user_id AND OLD.name = ANY(label_names);
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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-- triggers when label name is updated
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CREATE TRIGGER label_names_update
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AFTER UPDATE ON omnivore.labels
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FOR EACH ROW
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WHEN (OLD.name <> NEW.name)
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EXECUTE FUNCTION update_label_names();
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-- remove old trigger which is too slow
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DROP TRIGGER IF EXISTS entity_labels_update ON omnivore.labels;
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DROP FUNCTION IF EXISTS omnivore.update_entity_labels();
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DROP INDEX IF EXISTS omnivore.library_item_saved_at_idx;
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DROP INDEX IF EXISTS omnivore.library_item_updated_at_idx;
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DROP INDEX IF EXISTS omnivore.library_item_read_at_idx;;
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COMMIT;
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