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75 lines
3.5 KiB
SQL
75 lines
3.5 KiB
SQL
-- This migration enables metadata separation
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-- Drops all tables which stores hasura metadata
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DROP VIEW hdb_catalog.hdb_role;
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DROP TABLE hdb_catalog.hdb_custom_types;
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DROP TABLE hdb_catalog.hdb_action_permission;
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DROP TABLE hdb_catalog.hdb_action;
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DROP VIEW hdb_catalog.hdb_computed_field_function;
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DROP TABLE hdb_catalog.hdb_computed_field;
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DROP TABLE hdb_catalog.hdb_allowlist;
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DROP TABLE hdb_catalog.hdb_query_collection;
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DROP VIEW hdb_catalog.hdb_function_info_agg;
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DROP VIEW hdb_catalog.hdb_table_info_agg;
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DROP TRIGGER hdb_schema_update_event_notifier ON hdb_catalog.hdb_schema_update_event;
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DROP FUNCTION hdb_catalog.hdb_schema_update_event_notifier();
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DROP TABLE hdb_catalog.hdb_schema_update_event; -- https://github.com/hasura/graphql-engine/pull/6173
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DROP TABLE hdb_catalog.remote_schemas;
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DROP VIEW hdb_catalog.hdb_function_agg;
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DROP TABLE hdb_catalog.hdb_function;
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DROP TABLE hdb_catalog.event_triggers;
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DROP FUNCTION hdb_catalog.inject_table_defaults(text, text, text, text);
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DROP VIEW hdb_catalog.hdb_primary_key;
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DROP VIEW hdb_catalog.hdb_unique_constraint;
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DROP VIEW hdb_catalog.hdb_check_constraint;
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DROP VIEW hdb_catalog.hdb_foreign_key_constraint;
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DROP VIEW hdb_catalog.hdb_permission_agg;
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DROP TABLE hdb_catalog.hdb_permission;
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DROP TABLE hdb_catalog.hdb_remote_relationship;
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DROP TABLE hdb_catalog.hdb_relationship;
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DROP TRIGGER event_trigger_table_name_update_trigger ON hdb_catalog.hdb_table;
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DROP FUNCTION hdb_catalog.event_trigger_table_name_update();
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DROP TABLE hdb_catalog.hdb_table;
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DROP FUNCTION hdb_catalog.check_violation(text);
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-- Remove foreign key constraint to hdb_cron_triggers in hdb_cron_events
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ALTER TABLE hdb_catalog.hdb_cron_events DROP CONSTRAINT hdb_cron_events_trigger_name_fkey;
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-- Now drop hdb_cron_triggers
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DROP VIEW hdb_catalog.hdb_cron_events_stats;
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DROP TABLE hdb_catalog.hdb_cron_triggers;
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-- Create table which stores metadata JSON blob
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-- The "IF NOT EXISTS" is added due to the introduction of maintenance mode
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-- in which migrations are not applied on startup but the 'hdb_catalog.hdb_table'
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-- is expected to exist and contain the metadata of the graphql-engine. Now, when
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-- the graphql-engine is run in normal mode (with maintenance mode disabled) this
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-- migration file will be run and since this table already exists, we should add
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-- the "IF NOT EXISTS" clause to avoid a migration error
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CREATE TABLE IF NOT EXISTS hdb_catalog.hdb_metadata
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(
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id INTEGER PRIMARY KEY,
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metadata JSON NOT NULL
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);
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-- DROP hdb_views schema (https://github.com/hasura/graphql-engine/pull/6135)
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DROP SCHEMA IF EXISTS hdb_views CASCADE;
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-- Note [Migration of schema related to table event triggers log]
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-- Table event triggers log related schema is
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-- - TABLE hdb_catalog.event_log
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-- - TABLE hdb_catalog.event_invocation_logs
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-- - PROCEDURE hdb_catalog.insert_event_log
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-- We define this schema in any pg source to support table event triggers.
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-- There's a possibility of using metadata storage database as a source
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-- (more likely if server is started with only --database-url option).
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-- In this case, dropping the schema in this up (42 to 43) migration and re-creating the
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-- same while defining as a pg source causes loss of event trigger logs.
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-- To avoid this we won't drop the schema in this migration. While defining
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-- a pg source we will define this schema only if this doesn't exist. This also
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-- raises a question, "What happens if old database is only used as metadata storage?".
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-- Then, definitely, this schema will be of no use. But, this helps a lot in down
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-- migration (opposite to this migration, 43 to 42) as we create this schema only if this
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-- doesn't exist.
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