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Fixed duplicate plan_user_info removal on MySQL

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This commit is contained in:
Rsl1122 2019-04-02 18:57:29 +03:00
parent 7dead97213
commit f1b42e9a58
1 changed files with 20 additions and 1 deletions
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21
Plan/common/src/main/java/com/djrapitops/plan/db/access/transactions/init/RemoveDuplicateUserInfoTransaction.java
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@ -1,3 +1,19 @@
/*
* This file is part of Player Analytics (Plan).
*
* Plan is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License v3 as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Plan is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Plan. If not, see <https://www.gnu.org/licenses/>.
*/
package com.djrapitops.plan.db.access.transactions.init;
import com.djrapitops.plan.db.access.transactions.Transaction;
@ -25,7 +41,10 @@ public class RemoveDuplicateUserInfoTransaction extends Transaction {
execute(
"DELETE" + FROM + UserInfoTable.TABLE_NAME +
WHERE + COLUMN_ID +
" NOT IN (" + STATEMENT_SELECT_DUPLICATE_IDS + ')'
// Nested query here is required because MySQL limits update statements with nested queries:
// The nested query creates a temporary table that bypasses the same table query-update limit.
// Note: MySQL versions 5.6.7+ might optimize this nested query away leading to an exception.
" NOT IN (" + SELECT + "id" + FROM + '(' + STATEMENT_SELECT_DUPLICATE_IDS + ") as ids)"
);
}
}