-- This file was automatically created by Diesel to setup helper functions
-- and other internal bookkeeping. This file is safe to edit, any future
-- changes will be added to existing projects as new migrations.




-- Sets up a trigger for the given table to automatically set a column called
-- `updated_at` whenever the row is modified (unless `updated_at` was included
-- in the modified columns)
--
-- # Example
--
-- ```sql
-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
--
-- SELECT diesel_manage_updated_at('users');
-- ```

--  CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
--  BEGIN
--      EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
--                      FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
--  END;
--  $$ LANGUAGE plpgsql;

--  CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
--  BEGIN
--      IF (
--          NEW IS DISTINCT FROM OLD AND
--          NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
--      ) THEN
--          NEW.updated_at := current_timestamp;
--      END IF;
--      RETURN NEW;
--  END;
--  $$ LANGUAGE plpgsql;

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