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mirror of https://github.com/go-gitea/gitea synced 2025-02-25 22:34:18 +00:00
Lunny Xiao 7df09e31fa
Move issue pin to an standalone table for querying performance (#33452)
Noticed a SQL in gitea.com has a bigger load. It seems both `is_pull`
and `pin_order` are not indexed columns in the database.

```SQL
SELECT `id`, `repo_id`, `index`, `poster_id`, `original_author`, `original_author_id`, `name`, `content`, `content_version`, `milestone_id`, `priority`, `is_closed`, `is_pull`, `num_comments`, `ref`, `pin_order`, `deadline_unix`, `created_unix`, `updated_unix`, `closed_unix`, `is_locked`, `time_estimate` FROM `issue` WHERE (repo_id =?) AND (is_pull = 0) AND (pin_order > 0) ORDER BY pin_order
```

I came across a comment
https://github.com/go-gitea/gitea/pull/24406#issuecomment-1527747296
from @delvh , which presents a more reasonable approach. Based on this,
this PR will migrate all issue and pull request pin data from the
`issue` table to the `issue_pin` table. This change benefits larger
Gitea instances by improving scalability and performance.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2025-02-17 11:28:37 -08:00

32 lines
828 B
Go

// Copyright 2025 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package v1_24 //nolint
import (
"code.gitea.io/gitea/models/migrations/base"
"xorm.io/xorm"
)
func MovePinOrderToTableIssuePin(x *xorm.Engine) error {
type IssuePin struct {
ID int64 `xorm:"pk autoincr"`
RepoID int64 `xorm:"UNIQUE(s) NOT NULL"`
IssueID int64 `xorm:"UNIQUE(s) NOT NULL"`
IsPull bool `xorm:"NOT NULL"`
PinOrder int `xorm:"DEFAULT 0"`
}
if err := x.Sync(new(IssuePin)); err != nil {
return err
}
if _, err := x.Exec("INSERT INTO issue_pin (repo_id, issue_id, is_pull, pin_order) SELECT repo_id, id, is_pull, pin_order FROM issue WHERE pin_order > 0"); err != nil {
return err
}
sess := x.NewSession()
defer sess.Close()
return base.DropTableColumns(sess, "issue", "pin_order")
}