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https://github.com/go-gitea/gitea
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53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package v1_22 //nolint
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import (
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"fmt"
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"xorm.io/xorm"
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"xorm.io/xorm/schemas"
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)
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// AddUniqueIndexForProjectIssue adds unique indexes for project issue table
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func AddUniqueIndexForProjectIssue(x *xorm.Engine) error {
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// remove possible duplicated records in table project_issue
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type result struct {
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IssueID int64
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ProjectID int64
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Cnt int
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}
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var results []result
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if err := x.Select("issue_id, project_id, count(*) as cnt").
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Table("project_issue").
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GroupBy("issue_id, project_id").
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Having("count(*) > 1").
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Find(&results); err != nil {
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return err
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}
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for _, r := range results {
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if x.Dialect().URI().DBType == schemas.MSSQL {
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if _, err := x.Exec(fmt.Sprintf("delete from project_issue where id in (SELECT top %d id FROM project_issue WHERE issue_id = ? and project_id = ?)", r.Cnt-1), r.IssueID, r.ProjectID); err != nil {
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return err
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}
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} else {
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var ids []int64
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if err := x.SQL("SELECT id FROM project_issue WHERE issue_id = ? and project_id = ? limit ?", r.IssueID, r.ProjectID, r.Cnt-1).Find(&ids); err != nil {
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return err
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}
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if _, err := x.Table("project_issue").In("id", ids).Delete(); err != nil {
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return err
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}
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}
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}
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// add unique index for project_issue table
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type ProjectIssue struct { //revive:disable-line:exported
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ID int64 `xorm:"pk autoincr"`
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IssueID int64 `xorm:"INDEX unique(s)"`
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ProjectID int64 `xorm:"INDEX unique(s)"`
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}
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return x.Sync(new(ProjectIssue))
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}
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