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29 lines
1.4 KiB
SQL
29 lines
1.4 KiB
SQL
-- Copyright (c) 2016-2018 Timescale, Inc. All Rights Reserved.
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--
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-- This file is licensed under the Apache License, see LICENSE-APACHE
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-- at the top level directory of the TimescaleDB distribution.
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-- This file contains infrastructure for cache invalidation of TimescaleDB
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-- metadata caches kept in C. Please look at cache_invalidate.c for a
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-- description of how this works.
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CREATE TABLE IF NOT EXISTS _timescaledb_cache.cache_inval_hypertable();
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-- For notifying the scheduler of changes to the bgw_job table.
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CREATE TABLE IF NOT EXISTS _timescaledb_cache.cache_inval_bgw_job();
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-- This is pretty subtle. We create this dummy cache_inval_extension table
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-- solely for the purpose of getting a relcache invalidation event when it is
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-- deleted on DROP extension. It has no related triggers. When the table is
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-- invalidated, all backends will be notified and will know that they must
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-- invalidate all cached information, including catalog table and index OIDs,
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-- etc.
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CREATE TABLE IF NOT EXISTS _timescaledb_cache.cache_inval_extension();
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-- not actually strictly needed but good for sanity as all tables should be dumped.
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SELECT pg_catalog.pg_extension_config_dump('_timescaledb_cache.cache_inval_hypertable', '');
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SELECT pg_catalog.pg_extension_config_dump('_timescaledb_cache.cache_inval_extension', '');
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SELECT pg_catalog.pg_extension_config_dump('_timescaledb_cache.cache_inval_bgw_job', '');
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GRANT SELECT ON ALL TABLES IN SCHEMA _timescaledb_cache TO PUBLIC;
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