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97 lines
2.3 KiB
PL/PgSQL
97 lines
2.3 KiB
PL/PgSQL
-- Add procedure to decimate old nav data
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--
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-- New schema version: 0.6.5
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--
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-- ATTENTION:
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--
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-- ENSURE YOU HAVE BACKED UP THE DATABASE BEFORE RUNNING THIS SCRIPT.
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--
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--
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-- NOTE: This upgrade affects the public schema only.
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-- NOTE: Each application starts a transaction, which must be committed
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-- or rolled back.
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--
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-- This update modifies notify() to accept, as optional arguments, the
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-- names of columns that are to be *excluded* from the notification.
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-- It is intended for tables with large columns which are however of
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-- no particular interest in a notification.
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--
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-- To apply, run as the dougal user:
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--
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-- psql <<EOF
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-- \i $THIS_FILE
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-- COMMIT;
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-- EOF
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--
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-- NOTE: It can be applied multiple times without ill effect.
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--
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BEGIN;
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CREATE OR REPLACE PROCEDURE pg_temp.show_notice (notice text) AS $$
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BEGIN
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RAISE NOTICE '%', notice;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE PROCEDURE pg_temp.upgrade_database () AS $outer$
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BEGIN
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RAISE NOTICE 'Updating schema %', 'public';
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SET search_path TO public;
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-- BEGIN
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CREATE OR REPLACE TRIGGER comparisons_tg
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AFTER INSERT OR DELETE OR UPDATE
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ON comparisons.comparisons
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FOR EACH ROW
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EXECUTE FUNCTION public.notify('comparisons', 'data');
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-- END
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END;
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$outer$ LANGUAGE plpgsql;
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CREATE OR REPLACE PROCEDURE pg_temp.upgrade () AS $outer$
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DECLARE
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row RECORD;
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current_db_version TEXT;
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BEGIN
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SELECT value->>'db_schema' INTO current_db_version FROM public.info WHERE key = 'version';
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IF current_db_version >= '0.6.5' THEN
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RAISE EXCEPTION
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USING MESSAGE='Patch already applied';
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END IF;
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IF current_db_version != '0.6.4' THEN
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RAISE EXCEPTION
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USING MESSAGE='Invalid database version: ' || current_db_version,
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HINT='Ensure all previous patches have been applied.';
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END IF;
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CALL pg_temp.upgrade_database();
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END;
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$outer$ LANGUAGE plpgsql;
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CALL pg_temp.upgrade();
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CALL pg_temp.show_notice('Cleaning up');
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DROP PROCEDURE pg_temp.upgrade_database ();
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DROP PROCEDURE pg_temp.upgrade ();
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CALL pg_temp.show_notice('Updating db_schema version');
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INSERT INTO public.info VALUES ('version', '{"db_schema": "0.6.5"}')
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ON CONFLICT (key) DO UPDATE
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SET value = public.info.value || '{"db_schema": "0.6.5"}' WHERE public.info.key = 'version';
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CALL pg_temp.show_notice('All done. You may now run "COMMIT;" to persist the changes');
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DROP PROCEDURE pg_temp.show_notice (notice text);
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--
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--NOTE Run `COMMIT;` now if all went well
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--
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