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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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