42 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			SQL
		
	
	
			
		
		
	
	
			42 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			SQL
		
	
	
/* Copyright 2017 New Vector Ltd
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *    http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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-- this didn't work on SQLite 3.7 (because of lack of partial indexes), so was
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-- removed and replaced with 46/local_media_repository_url_idx.sql.
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--
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-- CREATE INDEX local_media_repository_url_idx ON local_media_repository(created_ts) WHERE url_cache IS NOT NULL;
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-- we need to change `expires` to `expires_ts` so that we can index on it. SQLite doesn't support
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-- indices on expressions until 3.9.
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CREATE TABLE local_media_repository_url_cache_new(
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    url TEXT,
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    response_code INTEGER,
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    etag TEXT,
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    expires_ts BIGINT,
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    og TEXT,
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    media_id TEXT,
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    download_ts BIGINT
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);
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INSERT INTO local_media_repository_url_cache_new
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    SELECT url, response_code, etag, expires + download_ts, og, media_id, download_ts FROM local_media_repository_url_cache;
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DROP TABLE local_media_repository_url_cache;
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ALTER TABLE local_media_repository_url_cache_new RENAME TO local_media_repository_url_cache;
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CREATE INDEX local_media_repository_url_cache_expires_idx ON local_media_repository_url_cache(expires_ts);
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CREATE INDEX local_media_repository_url_cache_by_url_download_ts ON local_media_repository_url_cache(url, download_ts);
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CREATE INDEX local_media_repository_url_cache_media_idx ON local_media_repository_url_cache(media_id);
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