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30 lines
1.2 KiB
SQL
30 lines
1.2 KiB
SQL
/* Copyright 2015 OpenMarket 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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CREATE TABLE IF NOT EXISTS schema_version(
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Lock char(1) NOT NULL DEFAULT 'X', -- Makes sure this table only has one row.
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version INTEGER NOT NULL,
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upgraded BOOL NOT NULL, -- Whether we reached this version from an upgrade or an initial schema.
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CONSTRAINT schema_version_lock CHECK (Lock='X') ON CONFLICT REPLACE
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);
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CREATE TABLE IF NOT EXISTS schema_deltas(
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version INTEGER NOT NULL,
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file TEXT NOT NULL,
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CONSTRAINT schema_deltas_ver_file UNIQUE (version, file) ON CONFLICT IGNORE
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);
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CREATE INDEX IF NOT EXISTS schema_deltas_ver ON schema_deltas(version);
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