forked from gitea/gitea
44 lines
1014 B
Go
44 lines
1014 B
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"fmt"
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"xorm.io/xorm"
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)
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// deleteOrphanedIssueLabels looks through the database for issue_labels where the label no longer exists and deletes them.
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func deleteOrphanedIssueLabels(x *xorm.Engine) error {
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type IssueLabel struct {
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ID int64 `xorm:"pk autoincr"`
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IssueID int64 `xorm:"UNIQUE(s)"`
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LabelID int64 `xorm:"UNIQUE(s)"`
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}
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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if err := sess.Sync2(new(IssueLabel)); err != nil {
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return fmt.Errorf("Sync2: %v", err)
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}
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if _, err := sess.Exec(`DELETE FROM issue_label WHERE issue_label.id IN (
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SELECT ill.id FROM (
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SELECT il.id
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FROM issue_label AS il
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LEFT JOIN label ON il.label_id = label.id
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WHERE
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label.id IS NULL
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) AS ill)`); err != nil {
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return err
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}
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return sess.Commit()
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}
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