mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
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c66a06ac6b
This is in preparation for having multiple data stores that offer different functionality, e.g. splitting out state or event storage.
53 lines
2.1 KiB
SQL
53 lines
2.1 KiB
SQL
/* Copyright 2016 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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/*
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* Update any email addresses that were stored with mixed case into all
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* lowercase
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*/
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-- There may be "duplicate" emails (with different case) already in the table,
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-- so we find them and move all but the most recently used account.
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UPDATE user_threepids
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SET medium = 'email_old'
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WHERE medium = 'email'
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AND address IN (
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-- We select all the addresses that are linked to the user_id that is NOT
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-- the most recently created.
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SELECT u.address
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FROM
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user_threepids AS u,
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-- `duplicate_addresses` is a table of all the email addresses that
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-- appear multiple times and when the binding was created
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(
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SELECT lower(u1.address) AS address, max(u1.added_at) AS max_ts
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FROM user_threepids AS u1
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INNER JOIN user_threepids AS u2 ON u1.medium = u2.medium AND lower(u1.address) = lower(u2.address) AND u1.address != u2.address
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WHERE u1.medium = 'email' AND u2.medium = 'email'
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GROUP BY lower(u1.address)
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) AS duplicate_addresses
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WHERE
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lower(u.address) = duplicate_addresses.address
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AND u.added_at != max_ts -- NOT the most recently created
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);
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-- This update is now safe since we've removed the duplicate addresses.
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UPDATE user_threepids SET address = LOWER(address) WHERE medium = 'email';
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/* Add an index for the select we do on passwored reset */
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CREATE INDEX user_threepids_medium_address on user_threepids (medium, address);
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